Factors of 2745
The factors of 2745 are 1, 3, 5, 9, 15, 45, 61, 183, 305, 549, 915, 2745. It has 12 factors.
Pick any whole number from 1 to 10,000.
How to work it out
- 1
A factor of 2745 is a whole number that divides it with nothing left over. You only need to test the numbers up to √2745 ≈ 52.39; every one that divides gives a pair.
- 2
The factor pairs are listed in the table below. Together they give 12 factors.
- 3
Prime factorisation: keep dividing by the smallest prime that fits.
- 4
Add all the factors: 1 + 3 + 5 + 9 + 15 + 45 + 61 + 183 + 305 + 549 + 915 + 2745 = 4836. Without 2745 itself that is 2091, so 2745 is a deficient number.
LaTeX source of the formulas on this page
\[ 2745 = 3^{2} \times 5 \times 61 \]Factor pairs of 2745
| Factor | Pairs with | Product |
|---|---|---|
| 1 | 2745 | 1 × 2745 = 2745 |
| 3 | 915 | 3 × 915 = 2745 |
| 5 | 549 | 5 × 549 = 2745 |
| 9 | 305 | 9 × 305 = 2745 |
| 15 | 183 | 15 × 183 = 2745 |
| 45 | 61 | 45 × 61 = 2745 |
Questions
What are the factors of 2745?
The factors of 2745 are 1, 3, 5, 9, 15, 45, 61, 183, 305, 549, 915, 2745. It has 12 factors.
What are the prime factors of 2745?
3, 5, 61. As a product: × 5 × 61.
How many factors does 2745 have?
2745 has 12 factors (6 factor pairs).
What is the sum of the factors of 2745?
4836.
Is 2745 a prime number?
No. It is divisible by 3, so 2745 = 3 × 915.