Word.ws English Dictionary

perfect numbers

perfect numbers is the plural of perfect number.

Meaning of perfect number

Noun

perfect number (plural perfect numbers)

  1. A number that is the sum of all of its divisors except itself.
    • The factors of 6 are 1, 2, 3 and 6, and 1 + 2 + 3 = 6, so 6 is a perfect number.

Questions about perfect numbers

What is perfect numbers the plural of?
Perfect numbers is the plural of perfect number.

Words near perfect numbers in the dictionary

  1. perfect market
  2. perfect markets
  3. perfect metal
  4. perfect metals
  5. perfect number
  6. perfect numbers
  7. perfect octave
  8. perfect octaves
  9. perfect participle
  10. perfect participles
  11. perfect passive participle

Source and license

Adapted from Wiktionary: perfect numbers (page history and authors); perfect 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.

Last updated:

Cite this entry: “perfect numbers.” Word.ws, https://word.ws/perfect_numbers. Based on Wiktionary, CC BY-SA 4.0.