Factors of 15

Factors of 15 are those numbers that, when multiplied together, give the result of 15. We can also say that a factor is a number that divides a number ultimately, leaving zero as a remainder. We will use the multiplication method to find the factors of 15.

Factors Calculator

What are the factors of 15?

The method of calculating the factors of 15 is as follows. First, each number can be divided by one and by itself.

Consequently, 1 and 15 are the factors of 15.
By dividing a number by 1, 2, 3, 4… we can discover all its factors.

(i) 15 ÷ 1 = 15

This division gives the remainder 0 and so is divisible by 15. So please put them 1 and 15 in your factor list.

1, …….. 15

(ii) 15 ÷ 2 = 7.5

This division gives the remainder 7.5, not being thoroughly divided. So we will not write 2 and 7.5 on the list.

(iii) 15 ÷ 3 = 5

This division gives the remainder 0 and so is divisible by 5. So please put them 3 and 5 in your factor list.

1, 3 ……..5, 15

(iv) 15 ÷ 4 = 3.75

This division gives the remainder 3.75, not being thoroughly divided. So we will not write 4 and 3.75 on the list.

(vi) Since we don’t have any more numbers to calculate, we are putting the numbers so far.

So 1, 3, 5 and 15 are factors of 15.

Factors of (- 15)

As – 3 and – 5 are negative factors because you get a positive number by multiplying two negatives, like (- 3) × (- 5) = 15.

Therefore, -1, -3, -5 and -15 are Negative factors of 15.

All factors of 15

Here is a list of all the positive and negative factors of 15 in numerical order.

1, 3, 5, 15, -1, -3, -5, -15

Therefore, 1, 3, 5, 15, -1, -3, -5, and -15 are All factors of 15.

Factor pairs of 15

1 x 15 = 15
3 x 5 = 15

So, ( 1, 15), and (3, 5) are factor pairs of 15

Prime Factors of 15

15 ÷ 3 = 5
5 ÷ 5 = 1

Therefore, 3 × 5 is the Prime factorization of 15.

Factor tree of 15

         15
        /   \
       3    5

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