Factors of 684
The factors of 684 are 1, 2, 3, 4, 6, 9, 12, 18, 19, 36, 38, 57, 76, 114, 171, 228, 342, 684. It has 18 factors.
Pick any whole number from 1 to 10,000.
How to work it out
- 1
A factor of 684 is a whole number that divides it with nothing left over. You only need to test the numbers up to √684 ≈ 26.15; every one that divides gives a pair.
- 2
The factor pairs are listed in the table below. Together they give 18 factors.
- 3
Prime factorisation: keep dividing by the smallest prime that fits.
- 4
Add all the factors: the sum is 1820. Without 684 itself that is 1136, so 684 is an abundant number.
LaTeX source of the formulas on this page
\[ 684 = 2^{2} \times 3^{2} \times 19 \]Factor pairs of 684
| Factor | Pairs with | Product |
|---|---|---|
| 1 | 684 | 1 × 684 = 684 |
| 2 | 342 | 2 × 342 = 684 |
| 3 | 228 | 3 × 228 = 684 |
| 4 | 171 | 4 × 171 = 684 |
| 6 | 114 | 6 × 114 = 684 |
| 9 | 76 | 9 × 76 = 684 |
| 12 | 57 | 12 × 57 = 684 |
| 18 | 38 | 18 × 38 = 684 |
| 19 | 36 | 19 × 36 = 684 |
Questions
What are the factors of 684?
The factors of 684 are 1, 2, 3, 4, 6, 9, 12, 18, 19, 36, 38, 57, 76, 114, 171, 228, 342, 684. It has 18 factors.
What are the prime factors of 684?
2, 3, 19. As a product: × × 19.
How many factors does 684 have?
684 has 18 factors (9 factor pairs).
What is the sum of the factors of 684?
1820.
Is 684 a prime number?
No. It is divisible by 2, so 684 = 2 × 342.