Returns sum of all divisors of a numberΒΆ

Returns sum of all divisors of a number.
Test Data:
number = 8
number = 12
Expected output:
[1, 2, 4]
[1, 2, 3, 4, 6]
def sum_div(N):

    divisors = [1]

    for i in range(2, N):
        if (N % i) == 0:
            divisors.append(i)

    return divisors

# test
print(sum_div(8))     # [1, 2, 4]
print(sum_div(12))    # [1, 2, 3, 4, 6]