# What Is a Perfect Number?

A perfect number is equal to the sum of its proper divisors. For example, 6 is the perfect number because its proper divisors (1, 2, and 3) total 6. Other perfect numbers are 28 and 496. No odd perfect number has been found; but that does not mean that one does not exist.
perfect number
NOUN [MATHEMATICS]
1.
a positive number that is equal to the sum of all positive integers that are submultiples of it, as 6, which is equal to the sum of 1, 2, and 3.
Source: Dictionary.com
Q&A Related to "What Is a Perfect Number"
 A perfect number is also well known as an integer number. This means that an integer number can only be a complete one without a fraction. So a perfect number could be a 3 or a 3234 http://answers.ask.com/Science/Mathematics/what_ar...
 Mersenne primes are prime numbers that are formed by raising 2 to a power k and subtracting 1; in equation form that would be m = (2^k) -1. Multiplying the Mersenne prime (2^k) -1 http://www.ehow.com/facts_6874237_calculate-perfec...
 There are actually dozens of known perfect numbers, and probably more. Only four were known to the ancient Greeks, who invented the concept. The definition of a perfect number is http://www.quora.com/What-is-the-idea-behind-perfe...
 4,9,16,25,36,49,64,81,100,121,144,169,196,225,256,289,324,361,400. Hope it helps message me on my message board if it did : http://wiki.answers.com/Q/What_are_the_listings_of...
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A perfect number is also well known as an integer number. This means that an integer number can only be a complete one without a fraction. So a perfect number ...
A perfect number is also well known as an integer number. This means that an integer number can only be a complete one without a fraction. So a perfect number ...
A perfect number is also well known as an integer number. This means that an integer number can only be a complete one without a fraction. So a perfect number ...