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perfect number

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A **perfect number** is a positive integer that is equal to the sum of its proper divisors, excluding itself. For example, 6 is a perfect number because its divisors 1, 2, and 3 add up to 6. Perfect numbers have fascinated mathematicians since ancient times due to their unique properties and connections to number theory and prime numbers. Use this tag for posts exploring mathematical concepts, properties, historical significance, and applications of perfect numbers.

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