Factors of 993

The factors of 993 are 1, 3, 331, 993. It has 4 factors.

Factors of 993

Pick any whole number from 1 to 10,000.

993 = 3 \times 331

How to work it out

1
A factor of 993 is a whole number that divides it with nothing left over. You only need to test the numbers up to √993 ≈ 31.51; every one that divides gives a pair.
2
The factor pairs are listed in the table below. Together they give 4 factors.
3
Prime factorisation: keep dividing by the smallest prime that fits.
$993 = 3 \times 331$
4
Add all the factors: 1 + 3 + 331 + 993 = 1328. Without 993 itself that is 335, so 993 is a deficient number.

LaTeX source of the formulas on this page

\[ 993 = 3 \times 331 \]

Factor	Pairs with	Product
1	993	1 × 993 = 993
3	331	3 × 331 = 993

What are the factors of 993?

The factors of 993 are 1, 3, 331, 993. It has 4 factors.

What are the prime factors of 993?

3, 331. As a product: 3 × 331.

How many factors does 993 have?

993 has 4 factors (2 factor pairs).

What is the sum of the factors of 993?

1328.

Is 993 a prime number?

No. It is divisible by 3, so 993 = 3 × 331.