求教GWD上的题目

successwei

    

A positive integer n is said to be
“prime-saturated” if the product of all the different positive prime factors of
n is less than the square root of n. 
What is the greatest two-digit prime-saturated integer?

    

 

    

A.      99

    

B.      98

    

C.      97

    

D.     96

    

E.      95

这道题目究竟什么意思？答案是D，不知道怎么得出的？多谢各位拔刀相助！

mymengming

http://forum.chasedream.com/dispbbs.asp?boardID=22&ID=329391&page=1