Factors of 671
The factors of 671 are 1, 11, 61, and 671. In total, 671 has 4 factors. Its prime factorization is 11 × 61, and the sum of all its factors is 744.
All factors of 671
Here are all 4 factors of 671, listed from smallest to largest.
Factor pairs of 671
These 2 pairs of whole numbers each multiply to give 671.
Prime factorization of 671
Dividing 671 by the smallest prime at each step gives its prime factorization:
The distinct prime factors of 671 are 11, 61. To factorize any other number, use the prime factorization calculator.
Factor tree of 671
A factor tree shows the same prime factorization visually. Each composite branch splits until every endpoint is a prime number.
Properties of 671
| Number of factors | 4 |
|---|---|
| Sum of factors | 744 |
| Sum of proper factors | 73 |
| Prime factorization | 11 × 61 |
| Prime or composite? | Composite |
| Even or odd? | Odd |
| Perfect square? | No |
| Perfect cube? | No |
| Classification | Deficient |
What makes 671 interesting
- 671 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.
- 671 is a deficient number: its proper factors sum to 73, which is 598 less than 671 itself.
How to find the factors of 671 yourself
Divide 671 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 √671 ≈ 25.90, because every factor above that pairs with one below it.
Reading both columns gives every factor: 1, 11, 61, 671. The factor calculator does this automatically for any number.
Related numbers
Numbers mathematically connected to 671.
Frequently asked questions about 671
What are the factors of 671?
Is 671 a prime number?
What is the prime factorization of 671?
What two numbers multiply to give 671?
What is the sum of the factors of 671?
Is 671 a perfect square?
What is the largest factor of 671 other than itself?
How many factors does 671 have?
Explore more
Try another number in the factor calculator, break 671 down further with the prime factorization calculator, or compare 671 with another number using the GCF calculator and LCM calculator. For divisor counts and sums, see the divisor calculator.