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What is a perfect number?

[ maths ]
asked on 21 Jan 2011
Abigail Silva Abigail Silva
14 Q, 0 A, 0 C
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Perfect numbers are another example of Greek progress in number theory, and credits the Pythagoreans for coining the term perfect. If you are interested in learning more about perfect numbers, you should also read up about Mersenne prime numbers because they are closely related.

The first four perfect numbers were known over 2,000 years ago. Some ancient cultures gave mystic interpretations to numbers that they thought were magic.

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.

answered on 21 Jan 2011
Joe Seb Joe Seb
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