2 |2,3,4,5,6,7,8,9,10
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2 |1,3,2,5,3,7,4,9,5
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3 |1,3,1,5,3,7,2,9,5
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5 |1,1,1,5,1,7,2,3,5
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|1,1,1,1,1,7,2,3,1(全部互质)
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公有质因数的积×独有质因数的积=最小公倍数:
(2×2×3×5)×(7×2×3)=2520
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