Factors of 1809

3, 67. As a product: 3^3 × 67.

The factors of 1809 are 1, 3, 9, 27, 67, 201, 603, 1809. It has 8 factors.

Factors of 1809

Pick any whole number from 1 to 10,000.

1809 = 3^{3} \times 67

How to work it out

1
A factor of 1809 is a whole number that divides it with nothing left over. You only need to test the numbers up to √1809 ≈ 42.53; every one that divides gives a pair.
2
The factor pairs are listed in the table below. Together they give 8 factors.
3
Prime factorisation: keep dividing by the smallest prime that fits.
$1809 = 3^{3} \times 67$
4
Add all the factors: 1 + 3 + 9 + 27 + 67 + 201 + 603 + 1809 = 2720. Without 1809 itself that is 911, so 1809 is a deficient number.

LaTeX source of the formulas on this page

\[ 1809 = 3^{3} \times 67 \]

What are the factors of 1809?

The factors of 1809 are 1, 3, 9, 27, 67, 201, 603, 1809. It has 8 factors.

What are the prime factors of 1809?

3, 67. As a product: $3^{3}$ × 67.

How many factors does 1809 have?

1809 has 8 factors (4 factor pairs).

What is the sum of the factors of 1809?

2720.

Is 1809 a prime number?

No. It is divisible by 3, so 1809 = 3 × 603.