Perfect number Leave a Comment / Maths / By rajeevvkalra Perfect Numbers Table of Contents What is a Perfect Number?Example: What is a Perfect Number? A perfect number is a positive integer that is equal to the sum of its proper divisors, excluding itself. Example: The first perfect number is 6 because its divisors are 1, 2, and 3; and 1 + 2 + 3 = 6.