deficient number


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Related to deficient number: Abundant number, perfect number

deficient number

[də′fish·ənt ′nəm·bər]
(mathematics)
A positive integer the sum of whose divisors, including 1 but excluding itself, is less than itself. Also known as defective number.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
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