Leetcode 507. Perfect Number

Check whether a positive integer equals the sum of its proper positive divisors (excluding itself); the core challenge is efficiently finding and summing divisor pairs (using the sqrt(n) pattern) to handle n up to 1e8.

Question Timeline

See when this question was last asked and where, including any notes left by other candidates.

Company

Level

Region

Comments

Your account is free and you can post anonymously if you choose.

Hello Interview Premium

Recent interview questions

System Design Guided Practice

Exclusive content

Learn More

Leetcode 507. Perfect Number

Question Timeline

Comments

Questions

Learn

Links

Legal

Contact