Factors of 491
The factors of 491 are 1 and 491. Since 491 is a prime number, it has exactly 2 factors and cannot be divided evenly by any other whole number. The sum of its factors is 492, and its prime factorization is simply 491 itself.
All factors of 491
Here are all 2 factors of 491, listed from smallest to largest.
Factor pairs of 491
There is only one factor pair for 491, because it is prime.
Prime factorization of 491
491 is a prime number, so it cannot be broken down further. Its prime factorization is simply 491.
Properties of 491
| Number of factors | 2 |
|---|---|
| Sum of factors | 492 |
| Sum of proper factors | 1 |
| Prime factorization | 491 |
| Prime or composite? | Prime |
| Even or odd? | Odd |
| Perfect square? | No |
| Perfect cube? | No |
| Classification | Deficient |
What makes 491 interesting
- 491 is a prime number, so its only factors are 1 and 491. It cannot be split into a product of two smaller whole numbers.
- Every prime number is deficient — the sum of its proper factors is always 1, which is far less than the number itself.
How to find the factors of 491 yourself
Divide 491 by each whole number starting from 1. Whenever the division leaves no remainder, both the divisor and the quotient are factors. You only need to test up to √491 ≈ 22.16, because every factor above that pairs with one below it.
Reading both columns gives every factor: 1, 491. The factor calculator does this automatically for any number.
Related numbers
Numbers mathematically connected to 491.
Frequently asked questions about 491
What are the factors of 491?
Is 491 a prime number?
What is the prime factorization of 491?
What two numbers multiply to give 491?
What is the sum of the factors of 491?
Is 491 a perfect square?
What is the largest factor of 491 other than itself?
How many factors does 491 have?
Explore more
Try another number in the factor calculator, break 491 down further with the prime factorization calculator, or compare 491 with another number using the GCF calculator and LCM calculator. For divisor counts and sums, see the divisor calculator.