Concept information
Terme préférentiel
deficient number
Définition
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In number theory, a deficient number or defective number is a positive integer n for which the sum of divisors of n is less than 2n. Equivalently, it is a number for which the sum of proper divisors (or aliquot sum) is less than n. For example, the proper divisors of 8 are 1, 2, and 4, and their sum is less than 8, so 8 is deficient.
(Wikipedia, The Free Encyclopedia, https://en.wikipedia.org/wiki/Deficient_number)
Concept générique
Synonyme(s)
- defective number
Traductions
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français
URI
http://data.loterre.fr/ark:/67375/PSR-P4SZHJ38-R
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