
解:因为 √48<√49=7,而48=1×48=2×24=3×16=4×12=6×8所以48的因数共有10个,如下:1,2,3,4,6,8,12,16,24,48,其中,质数有2,3共两个,奇数有1,3共两个,偶数有2,4,6,8,12,16,24,48共八个.

解:因为 √48<√49=7,而48=1×48=2×24=3×16=4×12=6×8所以48的因数共有10个,如下:1,2,3,4,6,8,12,16,24,48,其中,质数有2,3共两个,奇数有1,3共两个,偶数有2,4,6,8,12,16,24,48共八个.