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bn:02573858n
Noun Concept
Categories: Integer sequences, Arithmetic dynamics, Divisor function
EN
deficient number  defective number  deficient numbers
EN
In number theory, a deficient number or defective number is a positive integer n for which the sum of divisors of n is less than 2n. Wikipedia
Definitions
Examples
Relations
Sources
EN
In number theory, a deficient number or defective number is a positive integer n for which the sum of divisors of n is less than 2n. Wikipedia
Natural integer number for which the sum of its proper strict divisors is less than the number itself Wikidata
A number that is greater than the sum of all of its divisors except itself. Wiktionary
Deficient number. Wiktionary (translation)
EN
The factors of 22 are 1, 2 and 11 and 22, and 1 + 2 + 11 = 14, which is less than 22, so 22 is a deficient number. Wiktionary
IS A
natural number
HAS INSTANCE
ten
fourteen
twenty-one
twenty-two
twenty-five
+4 relations
Wikipedia
EN
deficient number
Wikidata
EN
deficient number
Wiktionary
EN
deficient number
Wikipedia Redirections
EN
defective number, deficient numbers

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