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200以内的因数表

200 = 1*2*2*2*5*5

1:1 2:1,23:1,34:1,2,4 5:1,56:1,2,3,6 7:1,78:1,2,4,8 9:1,3,9 10:1,2,5,10 11:1,1112:1,2,3,4,6,12 13:1,1314:1,2,7,14 15:1,3,5,15 16:1,2,4,8,1617:1,1718:1,2,3,6,9,18 19:1,1920:1,2,4,5,10,20 21:1,3,7,21 22:1,2,11,22 23:1,2324:1,2,3,4,6,8,12,24 25:1,5,

1,2,5,4,8,10,20,25,,40,50,100,200

有一个:144 因数:1,2,3,4,6,8,9,12,16,18,24,36,48,72,144 因数最终分解形式为质数A,B,C……:n1个A,n2个B,n3个C 因数个数等于不同质因数的指数分别加1后相乘的积(n1+1)*(n2+1)*(n3+1)……15 = 5*3 故可分解的n1,n2为5-1=4,3-2=2 A=2,B=3时:P=2*2*2*2*3*3=144 其余情况:A=2,B=5:P=2*2*2*2*5*5=400>200 A=3,B=2:P=3*3*3*3*2*2=324>200 均不符合

在100至200以内,有8个数的因数包括11?11x9=99<100100<11x11=121,11x12=132,11x13=143,11x14=154,11x15=165,11x16=176,11x17=187,11x18=198<20011x19=209>200

1:12:1,23:1,34:1,2,45:1,56:1,2,3,67:1,78:1,2,4,89:1,3,910:1,2,5,1011:1,1112:1,2,3,4,6,1213:1,1314:1,2,7,1415:1,3,5,1516:1,2,4,8,1617:1,1718:1,2,3,6,9,1819:1,1920:1,2,4,5,10,2021:1,3,7,2122:1,2,11,2223:1,2324:1,2,3,4,6,8,12,2425:1,5,2526:1,2

郭敦回答: 100=2*2*5*5, 101=1*101, 102=2*3*17, 103=1*103, 104=2*2*2*13, 105=3*5*7, 106=2*53, 107=1*107, 108=2*2*3*3*3, 109=1*109, 110=2*5*11, 111=3*37, … 150=2*3*5*5, 151=1*151 … 199=1*199, 200=2*2*2*5*5. 1

100<11x11=121,11x12=132,11x13=143,11x14=154,11x15=165,11x16=176,11x17=187,11x18=198<200 11x19=209>200

就是200以内的质数.有:2,3,5,7,11,13,17,19,23,29,31,37,39,41,43,47,53,59,61,67,71,73,79,83,89,97,101,103,107,109,113,121,127,131,137,139,149,151,157,163,,167,173,179,181,191,193,197,199共27个.求采纳!

200=2*2*2*5*5

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