Factors of 16
The factors of 16 are 1, 2, 4, 8, 16. It has 5 factors.
Factors of 16
Pick any whole number from 1 to 10,000.
How to work it out
- 1
A factor of 16 is a whole number that divides it with nothing left over. You only need to test the numbers up to √16 ≈ 4.00; every one that divides gives a pair.
- 2
The factor pairs are listed in the table below. Together they give 5 factors.
- 3
Prime factorisation: keep dividing by the smallest prime that fits.
- 4
Add all the factors: 1 + 2 + 4 + 8 + 16 = 31. Without 16 itself that is 15, so 16 is a deficient number.
LaTeX source of the formulas on this page
\[ 16 = 2^{4} \]Factor pairs of 16
| Factor | Pairs with | Product |
|---|---|---|
| 1 | 16 | 1 × 16 = 16 |
| 2 | 8 | 2 × 8 = 16 |
| 4 | 4 | 4 × 4 = 16 |
Questions
What are the factors of 16?
The factors of 16 are 1, 2, 4, 8, 16. It has 5 factors.
What are the prime factors of 16?
2. As a product: .
How many factors does 16 have?
16 has 5 factors (3 factor pairs, one of them 4 × 4).
What is the sum of the factors of 16?
31.
Is 16 a prime number?
No. It is divisible by 2, so 16 = 2 × 8.