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Physical Mathematics

ISSN: 2090-0902

Open Access

Announcement-Overview of Perfect Number (in 7 units)

Abstract

Nhuan Doan

A perfect number is a positive integer that is equal to the sum of its positive divisors, excluding the number itself. Currently only even perfect numbers are to be known. It is not known if any odd perfect numbers exist or not. So, is there an odd perfect number? No, there is not. (See unit 4, …, 7)

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