Word.ws English Dictionary

amicable number

amicable number noun: one of a pair of numbers having the property that the sum of the divisors of each, excluding itself, is equal to the other number.

Noun

amicable number (plural amicable numbers)

  1. One of a pair of numbers having the property that the sum of the divisors of each, excluding itself, is equal to the other number.
    • The factors of 220, excluding 220 itself, are 1, 2, 4, 5, 10, 11, 20, 22, 44, 55 and 110 and sum to 284; the factors of 284, excluding 284 itself, are 1, 2, 4, 71, and 142, and sum to 220; hence 220 and 284 are amicable numbers.

Forms of amicable number

pluralamicable numbers

Questions about amicable number

What does amicable number mean?
Amicable number means one of a pair of numbers having the property that the sum of the divisors of each, excluding itself, is equal to the other number.
What part of speech is amicable number?
Amicable number is a noun.
What is the plural of amicable number?
The plural of amicable number is amicable numbers.

Words near amicable number in the dictionary

  1. amic acids
  2. amica curiae
  3. amicabilities
  4. amicability
  5. amicable
  6. amicable number
  7. amicable numbers
  8. amicable suit
  9. amicable suits
  10. amicableness
  11. amicablenesses

Source and license

Adapted from Wiktionary: amicable number (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

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