def check_if_prime():
number = int(input("Enter number: "))
prime_lists = [1,2,3]
divisible_by = []
if number in prime_lists:
return divisible_by
if number==0:
return None
for i in range(2,number):
if number%i==0:
divisible_by.append(i)
return divisible_by
check_if_prime()