perfect number love


from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. A positive integer that is equal to the sum of its positive integral factors, including 1 but excluding itself.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. A number that is the sum of all of its divisors except itself.

from the GNU version of the Collaborative International Dictionary of English

  • adj. a number equal to the sum of all its divisors; as, 28, whose aliquot parts, or divisors, are 14, 7, 4, 2, 1. See Abundant number, under Abundant.


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