def get_prime_factors(n):
    factors = []
    divisor = 2

    while n > 1:
        if n % divisor == 0:
            factors.append(divisor)
            n //= divisor
        else:
            divisor += 1

    return factors


n = 72
ret = get_prime_factors(n)
print(ret)  # [2, 2, 2, 3, 3]