Factors of 9981

3, 1109. As a product: 3^2 × 1109.

The factors of 9981 are 1, 3, 9, 1109, 3327, 9981. It has 6 factors.

Factors of 9981

Pick any whole number from 1 to 10,000.

9981 = 3^{2} \times 1109

How to work it out

1
A factor of 9981 is a whole number that divides it with nothing left over. You only need to test the numbers up to √9981 ≈ 99.90; 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.
$9981 = 3^{2} \times 1109$
4
Add all the factors: 1 + 3 + 9 + 1109 + 3327 + 9981 = 14430. Without 9981 itself that is 4449, so 9981 is a deficient number.

LaTeX source of the formulas on this page

\[ 9981 = 3^{2} \times 1109 \]

What are the factors of 9981?

The factors of 9981 are 1, 3, 9, 1109, 3327, 9981. It has 6 factors.

What are the prime factors of 9981?

3, 1109. As a product: $3^{2}$ × 1109.

How many factors does 9981 have?

9981 has 6 factors (3 factor pairs).

What is the sum of the factors of 9981?

14430.

Is 9981 a prime number?

No. It is divisible by 3, so 9981 = 3 × 3327.