# Leetcode 507 - Perfect number

Note:

• Remember to get all divisors, just search between [sqrt(n), n].

Question:

A perfect number is a positive integer that is equal to the sum of its positive divisors, excluding the number itself. A divisor of an integer x is an integer that can divide x evenly.

Given an integer n, return true if n is a perfect number, otherwise return false.

Example:

Code: