deficient number

English

Noun

deficient number (plural deficient numbers)

1. (number theory) A number that is greater than the sum of all of its divisors except itself.

   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.

Synonyms

• defective number

Translations

deficient number

• Chinese:

  Mandarin: please add this translation if you can

• Finnish: vajaa luku
• French: nombre déficient m
• German: defizienten Zahl f
• Japanese: 不足数 (ふそくすう, fusokusū)
• Korean: 부족수 (bujoksu)
• Spanish: número defectivo m
• Swedish: defekt tal (sv) n

See also

• abundant number
• amicable numbers
• sociable numbers
• perfect number
• Wikipedia article on abundant numbers