Answer to Question #156332 in Python for usman

Question

An integer number is said to be a perfect number if the sum of its factors, including 1 (but not the number itself), is equal to the number. For example, 6 is a perfect number, because 6 = 1

+ 2 + 3. Write a function perfect that determines whether parameter number is a perfect number. Use this function in a program that determines and prints all the perfect numbers between 1 and 1000. Print the factors of each perfect number to confirm that the number is indeed perfect.

Answer 1

def perfect(num):
    """ Function to check if parameter number is perfect.
    If so, return the list of factors."""

    factors = []
    for i in range(1, num):
        # Check if i is a factor of num
        if num % i == 0:
            factors.append(i)

    if sum(factors) != num:
        return False
    return factors


for num in range(1, 1000):
    if perfect(num):
        factors = perfect(num)
        print(num, '=', end=' ')
        print(*factors, sep=' + ')