Factors of 247
The factors of 247 are 1, 13, 19, and 247. In total, 247 has 4 factors. Its prime factorization is 13 × 19, and the sum of all its factors is 280.
All factors of 247
Here are all 4 factors of 247, listed from smallest to largest.
Factor pairs of 247
These 2 pairs of whole numbers each multiply to give 247.
Prime factorization of 247
Dividing 247 by the smallest prime at each step gives its prime factorization:
The distinct prime factors of 247 are 13, 19. To factorize any other number, use the prime factorization calculator.
Factor tree of 247
A factor tree shows the same prime factorization visually. Each composite branch splits until every endpoint is a prime number.
Properties of 247
| Number of factors | 4 |
|---|---|
| Sum of factors | 280 |
| Sum of proper factors | 33 |
| Prime factorization | 13 × 19 |
| Prime or composite? | Composite |
| Even or odd? | Odd |
| Perfect square? | No |
| Perfect cube? | No |
| Classification | Deficient |
What makes 247 interesting
- 247 is a composite number, meaning it has more than two factors. It can be written as a product of smaller whole numbers in 2 different ways.
- 247 is a deficient number: its proper factors sum to 33, which is 214 less than 247 itself.
How to find the factors of 247 yourself
Divide 247 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 √247 ≈ 15.72, because every factor above that pairs with one below it.
Reading both columns gives every factor: 1, 13, 19, 247. The factor calculator does this automatically for any number.
Related numbers
Numbers mathematically connected to 247.
Frequently asked questions about 247
What are the factors of 247?
Is 247 a prime number?
What is the prime factorization of 247?
What two numbers multiply to give 247?
What is the sum of the factors of 247?
Is 247 a perfect square?
What is the largest factor of 247 other than itself?
How many factors does 247 have?
Explore more
Try another number in the factor calculator, break 247 down further with the prime factorization calculator, or compare 247 with another number using the GCF calculator and LCM calculator. For divisor counts and sums, see the divisor calculator.