妙，可以這樣解釋，但'合數因數數目是二的倍數'這句話不對啊，應該是非平方數有偶數個因數

來源: 萬斤油於 2022-04-01 21:55:45 [博客] [舊帖] [給我悄悄話] 本文已被閱讀：次

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