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

Accordingly:

**765** is multiplo of **1**

**765** is multiplo of **3**

**765** is multiplo of **5**

**765** is multiplo of **9**

**765** is multiplo of **15**

**765** is multiplo of **17**

**765** is multiplo of **45**

**765** is multiplo of **51**

**765** is multiplo of **85**

**765** is multiplo of **153**

**765** is multiplo of **255**

**765** has **11 positive divisors **

**765is an odd number**,as it is not divisible by 2

The factors for 765 are all the numbers between -765 and 765 , which divide 765 without leaving any remainder. Since 765 divided by -765 is an integer, -765 is a factor of 765 .

Since 765 divided by -765 is a whole number, -765 is a factor of 765

Since 765 divided by -255 is a whole number, -255 is a factor of 765

Since 765 divided by -153 is a whole number, -153 is a factor of 765

Since 765 divided by -85 is a whole number, -85 is a factor of 765

Since 765 divided by -51 is a whole number, -51 is a factor of 765

Since 765 divided by -45 is a whole number, -45 is a factor of 765

Since 765 divided by -17 is a whole number, -17 is a factor of 765

Since 765 divided by -15 is a whole number, -15 is a factor of 765

Since 765 divided by -9 is a whole number, -9 is a factor of 765

Since 765 divided by -5 is a whole number, -5 is a factor of 765

Since 765 divided by -3 is a whole number, -3 is a factor of 765

Since 765 divided by -1 is a whole number, -1 is a factor of 765

Since 765 divided by 1 is a whole number, 1 is a factor of 765

Since 765 divided by 3 is a whole number, 3 is a factor of 765

Since 765 divided by 5 is a whole number, 5 is a factor of 765

Since 765 divided by 9 is a whole number, 9 is a factor of 765

Since 765 divided by 15 is a whole number, 15 is a factor of 765

Since 765 divided by 17 is a whole number, 17 is a factor of 765

Since 765 divided by 45 is a whole number, 45 is a factor of 765

Since 765 divided by 51 is a whole number, 51 is a factor of 765

Since 765 divided by 85 is a whole number, 85 is a factor of 765

Since 765 divided by 153 is a whole number, 153 is a factor of 765

Since 765 divided by 255 is a whole number, 255 is a factor of 765

Multiples of 765 are all integers divisible by 765 , i.e. the remainder of the full division by 765 is zero. There are infinite multiples of 765. The smallest multiples of 765 are:

0 : in fact, 0 is divisible by any integer, so it is also a multiple of 765 since 0 × 765 = 0

765 : in fact, 765 is a multiple of itself, since 765 is divisible by 765 (it was 765 / 765 = 1, so the rest of this division is zero)

etc.

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

for 765, the answer is:
**No, 765 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 765). 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 27.659 ). 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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