Factors of 2121
The factors of 2121 are 1, 3, 7, 21, 101, 303, 707, 2121. It has 8 factors.
Pick any whole number from 1 to 10,000.
How to work it out
- 1
A factor of 2121 is a whole number that divides it with nothing left over. You only need to test the numbers up to √2121 ≈ 46.05; every one that divides gives a pair.
- 2
The factor pairs are listed in the table below. Together they give 8 factors.
- 3
Prime factorisation: keep dividing by the smallest prime that fits.
- 4
Add all the factors: 1 + 3 + 7 + 21 + 101 + 303 + 707 + 2121 = 3264. Without 2121 itself that is 1143, so 2121 is a deficient number.
LaTeX source of the formulas on this page
\[ 2121 = 3 \times 7 \times 101 \]
Factor pairs of 2121
| Factor | Pairs with | Product |
|---|---|---|
| 1 | 2121 | 1 × 2121 = 2121 |
| 3 | 707 | 3 × 707 = 2121 |
| 7 | 303 | 7 × 303 = 2121 |
| 21 | 101 | 21 × 101 = 2121 |
Questions
What are the factors of 2121?
The factors of 2121 are 1, 3, 7, 21, 101, 303, 707, 2121. It has 8 factors.
What are the prime factors of 2121?
3, 7, 101. As a product: 3 × 7 × 101.
How many factors does 2121 have?
2121 has 8 factors (4 factor pairs).
What is the sum of the factors of 2121?
3264.
Is 2121 a prime number?
No. It is divisible by 3, so 2121 = 3 × 707.