[LeetCode] 507. Perfect Number

Python

class Solution:
    def checkPerfectNumber(self, num: int) -> bool:
        if num < 2:
            return False
        answer = 1
        for i in range(2, int(math.sqrt(num) + 1)):
            if num % i == 0:
                answer = answer + i + num / i
        
        return num == answer