Factors of 989
The factors of 989 are 1, 23, 43, 989. It has 4 factors.
Factors of 989
Pick any whole number from 1 to 10,000.
How to work it out
- 1
A factor of 989 is a whole number that divides it with nothing left over. You only need to test the numbers up to ā989 ā 31.45; 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.
- 4
Add all the factors: 1 + 23 + 43 + 989 = 1056. Without 989 itself that is 67, so 989 is a deficient number.
LaTeX source of the formulas on this page
\[ 989 = 23 \times 43 \]
Factor pairs of 989
| Factor | Pairs with | Product |
|---|---|---|
| 1 | 989 | 1 Ć 989 = 989 |
| 23 | 43 | 23 Ć 43 = 989 |
Questions
What are the factors of 989?
The factors of 989 are 1, 23, 43, 989. It has 4 factors.
What are the prime factors of 989?
23, 43. As a product: 23 Ć 43.
How many factors does 989 have?
989 has 4 factors (2 factor pairs).
What is the sum of the factors of 989?
1056.
Is 989 a prime number?
No. It is divisible by 23, so 989 = 23 Ć 43.