90的所有因数是哪些?
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90的所有因数是哪些?
90=2*3^2*5
所以它有12个正因数:
1,2,3,5,6,9,10,15,18,30,45,90.
1,2,3,5,6,9,10,15,18,30,45,90
1,2,3,5,6,9,10,15,18,30,45,90
90=1*2*3*3*5
因子有:1,2,3,5,6,9,10,15,18,30,45,90
1.90
2.45
3.30
5.18
6.15
10.9
1,2,3,5,6,15,58,30,45,90......