I use python 3

I got this error

Traceback (most recent call last):

  File "C:/Python34/P3.py", line 43, in <module>

    dec_to_fact(int(number))

  File "C:/Python34/P3.py", line 16, in dec_to_fact

    print("The factorial system representation of "+str(i)+" is: "+str(int(b)))

ValueError: invalid literal for int() with base 10: 'j/aj/aj/aj/aj/aj/aj/aj/aj/aj/aj/aj/a0'