Factors of 998

The factors of 998 are 1, 2, 499, 998. It has 4 factors.

Factors of 998

Pick any whole number from 1 to 10,000.

998 = 2 \times 499

How to work it out

1
A factor of 998 is a whole number that divides it with nothing left over. You only need to test the numbers up to √998 ≈ 31.59; 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.
$998 = 2 \times 499$
4
Add all the factors: 1 + 2 + 499 + 998 = 1500. Without 998 itself that is 502, so 998 is a deficient number.

LaTeX source of the formulas on this page

\[ 998 = 2 \times 499 \]

Factor	Pairs with	Product
1	998	1 × 998 = 998
2	499	2 × 499 = 998

What are the factors of 998?

The factors of 998 are 1, 2, 499, 998. It has 4 factors.

What are the prime factors of 998?

2, 499. As a product: 2 × 499.

How many factors does 998 have?

998 has 4 factors (2 factor pairs).

What is the sum of the factors of 998?

1500.

Is 998 a prime number?

No. It is divisible by 2, so 998 = 2 × 499.