perfect number Hear it!

perfect number definition

perfect number

a positive integer which is equal to the sum of all its factors, excluding itself: the first four perfect numbers are 6, 28, 496, and 8,128

Webster's New World College Dictionary Copyright © 2009 by Wiley Publishing, Inc., Cleveland, Ohio.
Used by arrangement with John Wiley & Sons, Inc.

Comments


Do you have more to add? Sign in to share your linguistic knowledge or observation.

Connect with Facebook