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The list of all positive divisors (that is, the list of all integers that divide 22) is as follows :
Accordingly:
120 is multiplo of 1
120 is multiplo of 2
120 is multiplo of 3
120 is multiplo of 4
120 is multiplo of 5
120 is multiplo of 6
120 is multiplo of 8
120 is multiplo of 10
120 is multiplo of 12
120 is multiplo of 15
120 is multiplo of 20
120 is multiplo of 24
120 is multiplo of 30
120 is multiplo of 40
120 is multiplo of 60
120 has 15 positive divisors
In addition we can say of the number 120 that it is even
120 is an even number, as it is divisible by 2 : 120/2 = 60
The factors for 120 are all the numbers between -120 and 120 , which divide 120 without leaving any remainder. Since 120 divided by -120 is an integer, -120 is a factor of 120 .
Since 120 divided by -120 is a whole number, -120 is a factor of 120
Since 120 divided by -60 is a whole number, -60 is a factor of 120
Since 120 divided by -40 is a whole number, -40 is a factor of 120
Since 120 divided by -30 is a whole number, -30 is a factor of 120
Since 120 divided by -24 is a whole number, -24 is a factor of 120
Since 120 divided by -20 is a whole number, -20 is a factor of 120
Since 120 divided by -15 is a whole number, -15 is a factor of 120
Since 120 divided by -12 is a whole number, -12 is a factor of 120
Since 120 divided by -10 is a whole number, -10 is a factor of 120
Since 120 divided by -8 is a whole number, -8 is a factor of 120
Since 120 divided by -6 is a whole number, -6 is a factor of 120
Since 120 divided by -5 is a whole number, -5 is a factor of 120
Since 120 divided by -4 is a whole number, -4 is a factor of 120
Since 120 divided by -3 is a whole number, -3 is a factor of 120
Since 120 divided by -2 is a whole number, -2 is a factor of 120
Since 120 divided by -1 is a whole number, -1 is a factor of 120
Since 120 divided by 1 is a whole number, 1 is a factor of 120
Since 120 divided by 2 is a whole number, 2 is a factor of 120
Since 120 divided by 3 is a whole number, 3 is a factor of 120
Since 120 divided by 4 is a whole number, 4 is a factor of 120
Since 120 divided by 5 is a whole number, 5 is a factor of 120
Since 120 divided by 6 is a whole number, 6 is a factor of 120
Since 120 divided by 8 is a whole number, 8 is a factor of 120
Since 120 divided by 10 is a whole number, 10 is a factor of 120
Since 120 divided by 12 is a whole number, 12 is a factor of 120
Since 120 divided by 15 is a whole number, 15 is a factor of 120
Since 120 divided by 20 is a whole number, 20 is a factor of 120
Since 120 divided by 24 is a whole number, 24 is a factor of 120
Since 120 divided by 30 is a whole number, 30 is a factor of 120
Since 120 divided by 40 is a whole number, 40 is a factor of 120
Since 120 divided by 60 is a whole number, 60 is a factor of 120
Multiples of 120 are all integers divisible by 120 , i.e. the remainder of the full division by 120 is zero. There are infinite multiples of 120. The smallest multiples of 120 are:
0 : in fact, 0 is divisible by any integer, so it is also a multiple of 120 since 0 × 120 = 0
120 : in fact, 120 is a multiple of itself, since 120 is divisible by 120 (it was 120 / 120 = 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 120, the answer is: No, 120 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 120). 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 10.954 ). 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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