🌐EnglishEnglishFrançaisSvenskaРусский한국어日本語EntityQ839528· pop 10· linked from 226 articleshyperperfect numberAlso known as k-hyperperfect numbernatural number n for which the equality n=1+k(σ(n)−n−1) holds for some kAvailable in 10 languagesFrançais日本語РусскийEsperantoHungarianSvenskaTamilwikifunctions한국어via Wikidata sitelinks · CC0Connectionsprime numberEntityfigurate numberEntityCategoriesDivisor functionInteger sequencesPerfect numbers