质因数分解

#!/usr/bin/env python
#coding:utf-8

import sys
import math

def prime_split(number):
    i = 2
    sqrt_ = math.sqrt(number)
    while i <= sqrt_:
        mod_ = number % i
        if mod_ == 0:
            if number / i != 1:
                number /= i
                print i
                i -= 1
        i += 1
    print number

if __name__ == "__main__":
    if len(sys.argv) != 2:
        print "Usage: prime_split.py number"
        sys.exit(1)
    number = 0
    try:
        number = int(sys.argv[1])
    except Exception, e:
        print e.message
    prime_split(number)