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最小公倍數等於它們所有的質因數的乘積(如果有幾個質因數相同,則比較兩數中哪個數有該質因數的個數較多,乘較多的次數).就是如果出現重複的質因數,取最多的那組,不重複的質因數都要乘上去 154可以分解為14*11,11是質數,14分解成2和7,都是質數,所以即所求為2,7,11
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