Factors of 19

All factors of 19

Here are all 2 factors of 19, listed from smallest to largest.

Factor pairs of 19

There is only one factor pair for 19, because it is prime.

Prime factorization of 19

19 is a prime number, so it cannot be broken down further. Its prime factorization is simply 19.

Properties of 19

What makes 19 interesting

• 19 is a prime number, so its only factors are 1 and 19. It cannot be split into a product of two smaller whole numbers.
• Every prime number is deficient — the sum of its proper factors is always 1, which is far less than the number itself.

How to find the factors of 19 yourself

Divide 19 by each whole number starting from 1. Whenever the division leaves no remainder, both the divisor and the quotient are factors. You only need to test up to √19 ≈ 4.36, because every factor above that pairs with one below it.

Reading both columns gives every factor: 1, 19. The factor calculator does this automatically for any number.