A function that returns the number of divisors

The code below counts the divisors of 12. Turn it into a function count_divisors(n) that takes n and returns the number of its divisors. Then print count_divisors(12), count_divisors(18), and count_divisors(12) + count_divisors(7), one per line in that order.

Starter code

count = 0
for i in range(1, 13):
    if 12 % i == 0:
        count += 1
print(count)