Factor Calculator

Factors of 5

The factors of 5 are 1 and 5. Since 5 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 6, and its prime factorization is simply 5 itself.

All factors of 5

Here are all 2 factors of 5, listed from smallest to largest.

15

Factor pairs of 5

There is only one factor pair for 5, because it is prime.

1 × 5 = 5

Prime factorization of 5

5 is a prime number, so it cannot be broken down further. Its prime factorization is simply 5.

Properties of 5

Number of factors2
Sum of factors6
Sum of proper factors1
Prime factorization5
Prime or composite?Prime
Even or odd?Odd
Perfect square?No
Perfect cube?No
ClassificationDeficient

What makes 5 interesting

  • 5 is a prime number, so its only factors are 1 and 5. 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.
  • 5 appears in the Fibonacci sequence, where each number is the sum of the two before it.

How to find the factors of 5 yourself

Divide 5 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 √5 ≈ 2.24, because every factor above that pairs with one below it.

5 ÷ 1 = 5 ✓

Reading both columns gives every factor: 1, 5. The factor calculator does this automatically for any number.

Numbers mathematically connected to 5.

Frequently asked questions about 5

What are the factors of 5?

The factors of 5 are 1 and 5. That is 2 factors in total, counting both 1 and 5.

Is 5 a prime number?

Yes, 5 is a prime number. It has exactly two factors: 1 and 5. No other whole number divides it evenly.

What is the prime factorization of 5?

5 is already prime, so its prime factorization is simply 5. It cannot be broken down any further.

What two numbers multiply to give 5?

There is 1 pair of whole numbers that multiply to 5: 1 × 5.

What is the sum of the factors of 5?

Adding all the factors of 5 together gives 6. Excluding 5 itself, the proper factors sum to 1.

Is 5 a perfect square?

No, 5 is not a perfect square. There is no whole number that multiplies by itself to give 5. The nearest perfect squares are 4 and 9.

What is the largest factor of 5 other than itself?

The largest factor of 5 apart from 5 itself is 1, since 5 ÷ 1 = 5.

How many factors does 5 have?

5 has 2 factors: 1 and 5.

Explore more

Try another number in the factor calculator, break 5 down further with the prime factorization calculator, or compare 5 with another number using the GCF calculator and LCM calculator. For divisor counts and sums, see the divisor calculator.