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

Accordingly:

**1089** is multiplo of **1**

**1089** is multiplo of **3**

**1089** is multiplo of **9**

**1089** is multiplo of **11**

**1089** is multiplo of **33**

**1089** is multiplo of **99**

**1089** is multiplo of **121**

**1089** is multiplo of **363**

**1089** has **8 positive divisors **

**1089is an odd number**,as it is not divisible by 2

The factors for 1089 are all the numbers between -1089 and 1089 , which divide 1089 without leaving any remainder. Since 1089 divided by -1089 is an integer, -1089 is a factor of 1089 .

Since 1089 divided by -1089 is a whole number, -1089 is a factor of 1089

Since 1089 divided by -363 is a whole number, -363 is a factor of 1089

Since 1089 divided by -121 is a whole number, -121 is a factor of 1089

Since 1089 divided by -99 is a whole number, -99 is a factor of 1089

Since 1089 divided by -33 is a whole number, -33 is a factor of 1089

Since 1089 divided by -11 is a whole number, -11 is a factor of 1089

Since 1089 divided by -9 is a whole number, -9 is a factor of 1089

Since 1089 divided by -3 is a whole number, -3 is a factor of 1089

Since 1089 divided by -1 is a whole number, -1 is a factor of 1089

Since 1089 divided by 1 is a whole number, 1 is a factor of 1089

Since 1089 divided by 3 is a whole number, 3 is a factor of 1089

Since 1089 divided by 9 is a whole number, 9 is a factor of 1089

Since 1089 divided by 11 is a whole number, 11 is a factor of 1089

Since 1089 divided by 33 is a whole number, 33 is a factor of 1089

Since 1089 divided by 99 is a whole number, 99 is a factor of 1089

Since 1089 divided by 121 is a whole number, 121 is a factor of 1089

Since 1089 divided by 363 is a whole number, 363 is a factor of 1089

Multiples of 1089 are all integers divisible by 1089 , i.e. the remainder of the full division by 1089 is zero. There are infinite multiples of 1089. The smallest multiples of 1089 are:

0 : in fact, 0 is divisible by any integer, so it is also a multiple of 1089 since 0 × 1089 = 0

1089 : in fact, 1089 is a multiple of itself, since 1089 is divisible by 1089 (it was 1089 / 1089 = 1, so the rest of this division is zero)

2178: in fact, 2178 = 1089 × 2

3267: in fact, 3267 = 1089 × 3

4356: in fact, 4356 = 1089 × 4

5445: in fact, 5445 = 1089 × 5

etc.

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

for 1089, the answer is:
**No, 1089 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 1089). 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 33 ). 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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