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因為10=2×5=1×10,所以這個數為29>100,或這個數分解式只能是3×24=48,或5×24=80時是兩位數.所以恰有10個約數的兩位數只有48和80,它們的約數之和分別為:(1+3)(1+2+4+8+16)=124;(1+5)(1+2+4+8+ 16)=186.
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