Difference between revisions of "Proper divisor"

(No difference)

Revision as of 16:45, 12 October 2006

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

This article is a stub. Help us out by expanding it.