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The list of **all positive divisors** (that is, the list of all integers that **divide 22**) is as follows :

Accordingly:

**1218** is multiplo of **1**

**1218** is multiplo of **2**

**1218** is multiplo of **3**

**1218** is multiplo of **6**

**1218** is multiplo of **7**

**1218** is multiplo of **14**

**1218** is multiplo of **21**

**1218** is multiplo of **29**

**1218** is multiplo of **42**

**1218** is multiplo of **58**

**1218** is multiplo of **87**

**1218** is multiplo of **174**

**1218** is multiplo of **203**

**1218** is multiplo of **406**

**1218** is multiplo of **609**

**1218** has **15 positive divisors **

In addition we can say of the number **1218 that it is even**

1218 is an even number, as it is divisible by 2 : 1218/2 = 609

The factors for 1218 are all the numbers between -1218 and 1218 , which divide 1218 without leaving any remainder. Since 1218 divided by -1218 is an integer, -1218 is a factor of 1218 .

Since 1218 divided by -1218 is a whole number, -1218 is a factor of 1218

Since 1218 divided by -609 is a whole number, -609 is a factor of 1218

Since 1218 divided by -406 is a whole number, -406 is a factor of 1218

Since 1218 divided by -203 is a whole number, -203 is a factor of 1218

Since 1218 divided by -174 is a whole number, -174 is a factor of 1218

Since 1218 divided by -87 is a whole number, -87 is a factor of 1218

Since 1218 divided by -58 is a whole number, -58 is a factor of 1218

Since 1218 divided by -42 is a whole number, -42 is a factor of 1218

Since 1218 divided by -29 is a whole number, -29 is a factor of 1218

Since 1218 divided by -21 is a whole number, -21 is a factor of 1218

Since 1218 divided by -14 is a whole number, -14 is a factor of 1218

Since 1218 divided by -7 is a whole number, -7 is a factor of 1218

Since 1218 divided by -6 is a whole number, -6 is a factor of 1218

Since 1218 divided by -3 is a whole number, -3 is a factor of 1218

Since 1218 divided by -2 is a whole number, -2 is a factor of 1218

Since 1218 divided by -1 is a whole number, -1 is a factor of 1218

Since 1218 divided by 1 is a whole number, 1 is a factor of 1218

Since 1218 divided by 2 is a whole number, 2 is a factor of 1218

Since 1218 divided by 3 is a whole number, 3 is a factor of 1218

Since 1218 divided by 6 is a whole number, 6 is a factor of 1218

Since 1218 divided by 7 is a whole number, 7 is a factor of 1218

Since 1218 divided by 14 is a whole number, 14 is a factor of 1218

Since 1218 divided by 21 is a whole number, 21 is a factor of 1218

Since 1218 divided by 29 is a whole number, 29 is a factor of 1218

Since 1218 divided by 42 is a whole number, 42 is a factor of 1218

Since 1218 divided by 58 is a whole number, 58 is a factor of 1218

Since 1218 divided by 87 is a whole number, 87 is a factor of 1218

Since 1218 divided by 174 is a whole number, 174 is a factor of 1218

Since 1218 divided by 203 is a whole number, 203 is a factor of 1218

Since 1218 divided by 406 is a whole number, 406 is a factor of 1218

Since 1218 divided by 609 is a whole number, 609 is a factor of 1218

Multiples of 1218 are all integers divisible by 1218 , i.e. the remainder of the full division by 1218 is zero. There are infinite multiples of 1218. The smallest multiples of 1218 are:

0 : in fact, 0 is divisible by any integer, so it is also a multiple of 1218 since 0 × 1218 = 0

1218 : in fact, 1218 is a multiple of itself, since 1218 is divisible by 1218 (it was 1218 / 1218 = 1, so the rest of this division is zero)

2436: in fact, 2436 = 1218 × 2

3654: in fact, 3654 = 1218 × 3

4872: in fact, 4872 = 1218 × 4

6090: in fact, 6090 = 1218 × 5

etc.

It is possible to determine using mathematical techniques whether an integer is prime or not.

for 1218, the answer is:
**No, 1218 is not a prime number**.

To know the primality of an integer, we can use several algorithms. The most naive is to try all divisors below the number you want to know if it is prime (in our case 1218). We can already eliminate even numbers bigger than 2 (then 4 , 6 , 8 ...). Besides, we can stop at the square root of the number in question (here 34.9 ). Historically, the Eratosthenes screen (which dates back to Antiquity) uses this technique relatively effectively.

More modern techniques include the Atkin screen, probabilistic tests, or the cyclotomic test.

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