题目内容
1008的所有因数之和是
1955
1955
.分析:先找出1008的所有因数有1008的所有因数是1,1008,2,504,3,336,4,252,6,168,7,144,8,126,9,112,12,84,14,72,16,63,18,56,21,48,24,42,28,36.然后把它们相加即可.
解答:解:1008的所有因数是1,1008,2,504,3,336,4,252,6,168,7,144,8,126,9,112,12,84,14,72,16,63,18,56,21,48,24,42,28,36.
1+1008+2+504+3+336+4+252+6+168+7+144+8+126+9+112+12+84+14+72+16+63+18+56+21+48+24+42+28+36=3224.
故答案为:3224.
1+1008+2+504+3+336+4+252+6+168+7+144+8+126+9+112+12+84+14+72+16+63+18+56+21+48+24+42+28+36=3224.
故答案为:3224.
点评:此类题做题的关键是先找出28的约数,然后根据题意,相加即可得出结论.
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