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Deficient number - Wikipedia, the free encyclopedia
In mathematics, a deficient number or defective number is a number n for which σ ( n ) < 2 n . Here σ ( n ) is the sum-of-divisors function: the sum of all positive divisors of n , i...
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A deficient number is an integer $n$ such that its proper divisors add up to less than itself, or all its divisors add up to less than twice itself. ... ; "deficient number" is owned by PrimeFan. [ full author list (2) | owner history (1) ]
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Deficient numbers are sometimes called defective numbers (Singh 1997). Primes, prime powers, and any divisors of a perfect or deficient number are all ...
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Welcome to the Prime Glossary: a collection of definitions, information and facts all related to prime numbers. This pages contains the entry titled 'deficient number.' Come explore a new prime term today! ... equal to 2n perfect number 6, ... There are infinitely many deficient numbers. For example, pk, with p any...
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deficient number ( də′fishənt ′nəmbər ) ( mathematics ) A positive integer the sum of whose divisors, including 1 but excluding itself, is less than ... Sci-Tech Dictionary: deficient number...
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Britannica online encyclopedia article on deficient number (mathematics), ...either “abundant” or “deficient.” In an abundant number, the sum of its proper divisors (i.e., including 1 but excluding the number itself) is greater than the number; ... definition and example (in number game: ... CREATE MY deficient nu...
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Definition of Deficient number in the Online Dictionary. Meaning of Deficient number. Pronunciation of Deficient number. Translations of Deficient number. Deficient number synonyms, Deficient number antonyms. Information about Deficient number in the free online English dictionary and encyclopedia. ... See also: Deficient...
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