🌐EnglishEnglishDeutschEspañolFrançaisItalianoNederlandsPortuguêsSvenskaРусский한국어中文日本語EntityQ2067166· pop 20· linked from 249 articlespseudoperfect numberAlso known as semiperfect numberpositive integer that equals the sum of some of its proper divisorsAvailable in 20 languagesEspañolFrançais中文日本語РусскийItalianoEsperantoFinnishGreekHebrewConnectionsdivisorEntityprime numberEntityCategoriesInteger sequencesPerfect numbers