What is a perfect number?
A perfect number is a whole number, an integer greater than zero; and
when you add up all of the factors less than that number, you get that number.
when you add up all of the factors less than that number, you get that number.
Examples:
The factors of 6 are 1, 2, 3 and 6.1 + 2 + 3 = 6
The factors of 28 are 1, 2, 4, 7, 14 and 28.1 + 2 + 4 + 7 + 14 = 28
The factors of 496 are 1, 2, 4, 8, 16, 31, 62, 124, 248 and 496.1 + 2 + 4 + 8 + 16 + 31 + 62 + 124 + 248 = 496
The factors of 8128 are 1, 2, 4, 8, 16, 32, 64, 127, 254, 508, 1016, 2032, 4064 and 8128. I'll let you add them up.
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