検索結果- 日本語 - 英語
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英数
noun
(computing, input devices) alphanumerics, alphanumeric characters (as opposed to kana or kanji)
友愛数
noun
(number theory) amicable numbers, two different numbers related in such a way that the sum of the proper divisors of each is equal to the other number.
完全数
noun
(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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