Factors of 909

3, 101. As a product: 3^2 × 101.

The factors of 909 are 1, 3, 9, 101, 303, 909. It has 6 factors.

Factors of 909

Pick any whole number from 1 to 10,000.

909 = 3^{2} \times 101

How to work it out

1
A factor of 909 is a whole number that divides it with nothing left over. You only need to test the numbers up to √909 ≈ 30.15; every one that divides gives a pair.
2
The factor pairs are listed in the table below. Together they give 6 factors.
3
Prime factorisation: keep dividing by the smallest prime that fits.
$909 = 3^{2} \times 101$
4
Add all the factors: 1 + 3 + 9 + 101 + 303 + 909 = 1326. Without 909 itself that is 417, so 909 is a deficient number.

LaTeX source of the formulas on this page

\[ 909 = 3^{2} \times 101 \]

What are the factors of 909?

The factors of 909 are 1, 3, 9, 101, 303, 909. It has 6 factors.

What are the prime factors of 909?

3, 101. As a product: $3^{2}$ × 101.

How many factors does 909 have?

909 has 6 factors (3 factor pairs).

What is the sum of the factors of 909?

1326.

Is 909 a prime number?

No. It is divisible by 3, so 909 = 3 × 303.