Factor Calculator

Factors of 465

The factors of 465 are 1, 3, 5, 15, 31, 93, 155, and 465. In total, 465 has 8 factors. Its prime factorization is 3 × 5 × 31, and the sum of all its factors is 768.

All factors of 465

Here are all 8 factors of 465, listed from smallest to largest.

135153193155465

Factor pairs of 465

These 4 pairs of whole numbers each multiply to give 465.

1 × 465 = 465
3 × 155 = 465
5 × 93 = 465
15 × 31 = 465

Prime factorization of 465

Dividing 465 by the smallest prime at each step gives its prime factorization:

465 ÷ 3 = 155
155 ÷ 5 = 31
31 ÷ 31 = 1
Result: 465 = 3 × 5 × 31 = 3 × 5 × 31

The distinct prime factors of 465 are 3, 5, 31. To factorize any other number, use the prime factorization calculator.

Factor tree of 465

A factor tree shows the same prime factorization visually. Each composite branch splits until every endpoint is a prime number.

Factor tree of 4654653155531
Prime factors are shown in solid indigo. Composite numbers split into their smallest prime and the quotient.

Properties of 465

Number of factors8
Sum of factors768
Sum of proper factors303
Prime factorization3 × 5 × 31
Prime or composite?Composite
Even or odd?Odd
Perfect square?No
Perfect cube?No
ClassificationDeficient

What makes 465 interesting

  • 465 is a composite number, meaning it has more than two factors. It can be written as a product of smaller whole numbers in 4 different ways.
  • 465 is a deficient number: its proper factors sum to 303, which is 162 less than 465 itself.
  • 465 is a triangular number — it is the sum of the first 30 whole numbers (1 + 2 + … + 30 = 465).
  • 465 has 3 distinct prime factors (3, 5, 31), which is why it has so many divisors.

How to find the factors of 465 yourself

Divide 465 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 √46521.56, because every factor above that pairs with one below it.

465 ÷ 1 = 465
465 ÷ 3 = 155
465 ÷ 5 = 93
465 ÷ 15 = 31

Reading both columns gives every factor: 1, 3, 5, 15, 31, 93, 155, 465. The factor calculator does this automatically for any number.

Frequently asked questions about 465

What are the factors of 465?

The factors of 465 are 1, 3, 5, 15, 31, 93, 155, and 465. That is 8 factors in total, counting both 1 and 465.

Is 465 a prime number?

No, 465 is not prime — it is a composite number with 8 factors. A prime number has exactly two factors, but 465 is also divisible by 3.

What is the prime factorization of 465?

The prime factorization of 465 is 3 × 5 × 31. Written out in full: 3 × 5 × 31 = 465. Its distinct prime factors are 3, 5, 31.

What two numbers multiply to give 465?

There are 4 pairs of whole numbers that multiply to 465: 1 × 465, 3 × 155, 5 × 93, 15 × 31.

What is the sum of the factors of 465?

Adding all the factors of 465 together gives 768. Excluding 465 itself, the proper factors sum to 303.

Is 465 a perfect square?

No, 465 is not a perfect square. There is no whole number that multiplies by itself to give 465. The nearest perfect squares are 441 and 484.

What is the largest factor of 465 other than itself?

The largest factor of 465 apart from 465 itself is 155, since 465 ÷ 155 = 3.

How many factors does 465 have?

465 has 8 factors: 1, 3, 5, 15, 31, 93, 155, and 465. You can verify this from the prime factorization 3 × 5 × 31: add 1 to each exponent and multiply, giving 2 × 2 × 2 = 8.

Explore more

Try another number in the factor calculator, break 465 down further with the prime factorization calculator, or compare 465 with another number using the GCF calculator and LCM calculator. For divisor counts and sums, see the divisor calculator.