検索結果- 日本語 - 英語
検索内容:
不足数
noun
(number theory) deficient number, a number for which the sum of proper divisors is less than that number
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.
良いお年をお迎え下さい
phrase
(formal) [I, we] wish you a happy new year (literally meet a good year)
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