Factors of 1620
The factors of 1620 are 1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 45, 54, 60, 81, 90, 108, 135, 162, 180, 270, 324, 405, 540, 810, 1620. It has 30 factors.
Pick any whole number from 1 to 10,000.
How to work it out
- 1
A factor of 1620 is a whole number that divides it with nothing left over. You only need to test the numbers up to √1620 ≈ 40.25; every one that divides gives a pair.
- 2
The factor pairs are listed in the table below. Together they give 30 factors.
- 3
Prime factorisation: keep dividing by the smallest prime that fits.
- 4
Add all the factors: the sum is 5082. Without 1620 itself that is 3462, so 1620 is an abundant number.
LaTeX source of the formulas on this page
\[ 1620 = 2^{2} \times 3^{4} \times 5 \]Factor pairs of 1620
| Factor | Pairs with | Product |
|---|---|---|
| 1 | 1620 | 1 × 1620 = 1620 |
| 2 | 810 | 2 × 810 = 1620 |
| 3 | 540 | 3 × 540 = 1620 |
| 4 | 405 | 4 × 405 = 1620 |
| 5 | 324 | 5 × 324 = 1620 |
| 6 | 270 | 6 × 270 = 1620 |
| 9 | 180 | 9 × 180 = 1620 |
| 10 | 162 | 10 × 162 = 1620 |
| 12 | 135 | 12 × 135 = 1620 |
| 15 | 108 | 15 × 108 = 1620 |
| 18 | 90 | 18 × 90 = 1620 |
| 20 | 81 | 20 × 81 = 1620 |
| 27 | 60 | 27 × 60 = 1620 |
| 30 | 54 | 30 × 54 = 1620 |
| 36 | 45 | 36 × 45 = 1620 |
Questions
What are the factors of 1620?
The factors of 1620 are 1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 45, 54, 60, 81, 90, 108, 135, 162, 180, 270, 324, 405, 540, 810, 1620. It has 30 factors.
What are the prime factors of 1620?
2, 3, 5. As a product: × × 5.
How many factors does 1620 have?
1620 has 30 factors (15 factor pairs).
What is the sum of the factors of 1620?
5082.
Is 1620 a prime number?
No. It is divisible by 2, so 1620 = 2 × 810.