perfect number

名词 n.
中文释义

英文释义

名词 n.
  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.

词形变化

perfect numbers plural

词源

Calque of Latin numerus perfectus, with this use of perfectus itself a semantic loan from Ancient Greek τέλειος (téleios).
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