PTIME - Prime Time

这周的数学作业，老师给了你五个很大的数，让你找出它们的质因数。然而这些数字对于像你这样有编程知识的人来说，还远远不够大。所以你决定分别求出这些数的阶乘。现在你的工作是编一个程序来帮助你做作业。

For your math homework this week your teacher gave you five large numbers and asked you to find their prime factors. However these numbers aren't _nearly_ large enough for someone with knowledge of programming like yourself. So you decide to take the factorial of each of these numbers. Recall that N! (N factorial) is the product of the integers from 1 through N (inclusive). It’s your job now to create a program to help you do your homework.