Share this postA Piece of the Pi: mathematics explainedMultiply-perfect numbersCopy linkFacebookEmailNotesMoreMultiply-perfect numbersRichard GreenSep 20, 2015∙ Paid1Share this postA Piece of the Pi: mathematics explainedMultiply-perfect numbersCopy linkFacebookEmailNotesMoreShareMultiply-perfect numbersA number n is said to be perfect if the sum of the divisors of n is 2n, and it is said to be k-perfect, or multiply-perfect, if the sum of the divisors of n is kn. For example…This post is for paid subscribersSubscribeAlready a paid subscriber? Sign inPreviousNext