# Difference between revisions of "Proper divisor"

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A '''proper divisor''' of a [[positive integer]] <math>n</math> is any [[divisor]] of <math>n</math> other than <math>n</math> itself. Thus, [[prime number]]s have exactly one proper divisor, 1, and every other number has at least two proper divisors. | A '''proper divisor''' of a [[positive integer]] <math>n</math> is any [[divisor]] of <math>n</math> other than <math>n</math> itself. Thus, [[prime number]]s have exactly one proper divisor, 1, and every other number has at least two proper divisors. | ||

+ | == See Also == | ||

+ | *[[Deficient number]] | ||

+ | *[[Abundant number]] | ||

+ | *[[Perfect number]] | ||

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## Revision as of 21:56, 25 February 2014

A **proper divisor** of a positive integer is any divisor of other than itself. Thus, prime numbers have exactly one proper divisor, 1, and every other number has at least two proper divisors.

## See Also

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