perfect number
Noun
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Noun
perfect number (plural perfect numbers)
- (number theory) A number that is the sum of all of its divisors except itself.
- The factors of 6 are 1, 2, 3 and 6, and 1 + 2 + 3 = 6, so 6 is a perfect number.
- The factors of 28 are 1, 2, 4, 7, 14 and 28, and 1 + 2 + 4 + 7 + 14 = 28, so 28 is a perfect number.
- French: nombre parfait
- German: vollkommene Zahl, perfekte Zahl, ideale Zahl
- Italian: numero perfetto
- Portuguese: número perfeito
- Russian: соверше́нное число́
- Spanish: número perfecto
This text is extracted from the Wiktionary and it is available under the CC BY-SA 3.0 license | Terms and conditions | Privacy policy 0.004