Last Updated
：2026/01/07
完全数
Hiragana
かんぜんすう
Noun
Japanese Meaning
約数の和が自分自身に等しくなる正の整数 / 完全な状態や性質をもつ数（特に数学での特別な性質をもつ数）
Easy Japanese Meaning
ある数より小さいわり算できる数を全部たすと、その数と同じになるときの数
Chinese (Simplified) Meaning
等于其所有真因数之和的正整数（数论）
Chinese (Traditional) Meaning
數論：其所有正因數（不含自身）之和等於本身的正整數。
Korean Meaning
자신을 제외한 양의 약수들의 합이 자신과 같은 양의 정수
Vietnamese Meaning
số hoàn hảo (lý thuyết số) / số tự nhiên dương bằng tổng các ước dương của nó, trừ chính nó
Tagalog Meaning
ganap na bilang / positibong buumbilang na katumbas ng kabuuan ng mga wastong tagahati nito (maliban sa sarili nito)
Sense（1）
(number theory) perfect number, a positive integer that is equal to the sum of its positive divisors, excluding the number itself
（ canonical ）
（ romanization ）
（ hiragana ）
Quizzes for review
(number theory) perfect number, a positive integer that is equal to the sum of its positive divisors, excluding the number itself
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完全数
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In mathematics, a perfect number refers to a number where the sum of its divisors, excluding the number itself, equals the number.
In mathematics, a perfect number refers to a number where the sum of its divisors, excluding the number itself, equals the number.
See correct answer
数学では、完全数はその数自身を除く約数の和が自身と等しい数を指します。
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