How many divisors does 405 have?

The divisors or factors of 405 are:

1, 3, 5, 9, 15, 27, 45, 81 and 135

The number 405 has 9 divisors.

Divisors of Calculator

Write an integer greater than 0 then press 'Calculate!':
Ex.: 1, 2, 7, 16, 1024, etc.

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The number 405 is a composite number because it is divisible at least by 3, and 5. See below how many and what are their divisors.

The prime factorization of the number 405 is written as the product of powers, as 34•5 .

The prime factors of 405 are 3, and 5.

Prime factors do not always represent all divisors of a number. The number 405 has the following divisors or factors:

1, 3, 5, 9, 15, 27, 45, 81 and 135

These numbers above represent 'all' the divisors of 405 (not only the prime ones). Note that the number 405 has 9 divisors.

Use our divisor calculator to find out if any number is divisible, and in this case, identify and count all its divisors. See also our 'Table of Divisors from 0 to 10,000'

FAQs on divisors or factors of 405

What are all the divisors of 405?

The divisors of the number 405 are:

1, 3, 5, 9, 15, 27, 45, 81 and 135

How many divisors does 405 have?

The number 405 has 9 divisors.

Is 405 a prime or a composite number?

The number 405 is a composite number because it is divided by 9.

See also our tables of dividers:

Divisors Calculation Examples With Work

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