Problem 1012. Determine if input is a perfect number

• Created by Binbin Qi
• Appears in 2 groups

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Magic Numbers II

• 14 Problems
• 70 Finishers

Number theory

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• 21 Finishers

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A perfect number occurs whent the sum of all divisors of a positive integer, except the number itself, equals the number.

Example

28 = 1 + 2 + 4 + 7 + 14;

so return true

10 ~= 1 + 2 + 5

so return false

Solve

Solution Stats

48.95% Correct | 51.05% Incorrect

• 574 Solutions
• 242 Solvers

Last Solution submitted on Mar 15, 2025

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