Source: wikibot/hemiperfect-number
= Hemiperfect number
{wiki=Hemiperfect_number}
A **hemiperfect number** is a type of integer that is related to the concept of perfect numbers and their generalizations. Specifically, a positive integer \\( n \\) is considered a hemiperfect number if there exists a subset of its proper divisors (the divisors excluding itself) such that the sum of the divisors in that subset equals \\( n \\).