Description：
Write a program that takes an integer and prints out all ways to multiply smaller integers that equal the original number, without repeating sets of factors. In other words, if your output contains 4x3, you should not print out 3x4 again as that would be a repeating set. Note that this is not asking for prime factorization only. Also, you can assume that the input integers are reasonable in size; correctness is more important than effciency
Requirements：
Lang：pseudoCode Running time：1s Memory：32M