[求助]Prep1里的一道DS

If the integers a and n are greater than 1 and the product of the first 8 positive integers is a multiple of a的n次, what is the value
of a ?
(1) an = 64
(2) n = 6

答案是B

小弟没明白这个题目的意思，请各位指教^^

ps:十月题库换了没? 我27号上海下午场...

"the product of the first 8 positive integers"是指1到8的成绩，“multiple of a的n次”就是a的n次方，那么1*2*.....*8=a的n次方

知道n的值就会知道a了