Last Updated
：2025/11/11
nombre perfecte
（ plural ）
Quizzes for review
El 28 és un nombre perfecte perquè la suma dels seus divisors propis (1 + 2 + 4 + 7 + 14) és igual a 28.
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28 は完全数です。自分自身を除く約数の和（1 + 2 + 4 + 7 + 14）が 28 と等しいからです。
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El 28 és un nombre perfecte perquè la suma dels seus divisors propis (1 + 2 + 4 + 7 + 14) és igual a 28.
Catalan - Japanese
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