(1)
42=2×3×7
A(42) = (1+1) * (1+1) * (1+1) = 8
B(42) = (1+2) * (1+3) * (1+7) = 3*4*8 = 96
(2)
8 = 2*2*2 =(1+1)(1+1)(1+1) ……①
8 = 4*2 = (3+1)(1+1) ……②
8 = 7+1 ……③
适合情形①的N最小 = 2×3×5 = 30
适合情形②的N最小 = 2^3×3 = 24
适合情形①的N最小 = 2^7 = 128
综上,N最小为24
因数个数公式参考baike.baidu.com/view/1780622.htm