What are perfect numbers?
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Meghna Thapar 5 years, 3 months ago
In number theory, a perfect number is a positive integer that is equal to the sum of its positive divisors, excluding the number itself. For instance, 6 has divisors 1, 2 and 3, and 1 + 2 + 3 = 6, so 6 is a perfect number. The first 5 perfect numbers are 6, 28, 496, 8128, and 33550336. Perfect number, a positive integer that is equal to the sum of its proper divisors. ... The smallest perfect number is 6, which is the sum of 1, 2, and 3. Other perfect numbers are 28, 496, and 8,128. The discovery of such numbers is lost in prehistory.
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