Perfect number
Perfect number: A natural number that equals the sum of all its proper (positive) divisors.
No primary subject wiki entry.
Also located at: Wikipedia:Perfect number, Mathworld:PerfectNumber, Planetmath:PerfectNumber
Perfect number: A natural number that equals the sum of all its proper (positive) divisors.
No primary subject wiki entry.
Also located at: Wikipedia:Perfect number, Mathworld:PerfectNumber, Planetmath:PerfectNumber