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Definitions
perfect number Tweet Definition of perfect number Like Definition of perfect number on Facebook
noun (plural perfect numbers)
  1. (number theory) A number that is the sum of all of its divisors except itself.
The factors of 28 are 1, 2, 4, 7, 14 and 28, and 1 + 2 + 4 + 7 + 14 = 28, so 28 is a .
Translations: 
  • Dutch: perfect getal
  • French: nombre parfait
  • German: vollkommene Zahl , perfekte Zahl , ideale Zahl
  • Spanish: níºmero perfecto
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