Concept information
Preferred term
unitary perfect number
Definition
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A unitary perfect number is an integer which is the sum of its positive proper unitary divisors, not including the number itself (a divisor d of a number n is a unitary divisor if d and n/d share no common factors). Some perfect numbers are not unitary perfect numbers, and some unitary perfect numbers are not ordinary perfect numbers.
(Wikipedia, The Free Encyclopedia, https://en.wikipedia.org/wiki/Unitary_perfect_number)
Broader concept
In other languages
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French
URI
http://data.loterre.fr/ark:/67375/PSR-N94KV7VB-D
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