- multiperfect
- кратно совершенный
Новый англо-русский словарь. 2013.
Новый англо-русский словарь. 2013.
Multiply perfect number — In mathematics, a multiply perfect number (also called multiperfect number or pluperfect number) is a generalization of a perfect number. For a given natural number k, a number n is called k perfect (or k fold perfect) if and only if the sum of… … Wikipedia