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# Factorize numbers -- slow, could use a table of all primes <= 2*16
import sys
import math
error = 'fact.error' # exception
def fact(n):
if n < 1: raise error # fact() argument should be >= 1
if n = 1: return [] # special case
res = []
_fact(n, 2, res)
return res
def _fact(n, lowest, res):
highest = int(math.sqrt(float(n+1)))
for i in range(lowest, highest+1):
if n%i = 0:
res.append(i)
_fact(n/i, i, res)
break
else:
res.append(n)
def main():
if len(sys.argv) > 1:
for arg in sys.argv[1:]:
n = eval(arg)
print n, fact(n)
else:
try:
while 1:
print fact(input())
except EOFError:
pass
main()
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