Question

How to identify and print all the perfect numbers in some closed interval [ 2, n ] using Python?

Answer 1

⬛A perfect number is a positive integer that is equal to the sum of its proper divisors. The smallest perfect number is 6, which is the sum of 1, 2 and 3.

⬛You can find perfect numbers within a given range by testing each number for the given condition in the given range.

⬛ Here is an example

def print_perfect_nums(start, end):

  for i in range(start, end + 1):

  sum1 = 0

  for x in range(1, i):

     # Check if a divisor, if it is, add to sum

     if(i % x == 0):

        sum1 = sum1 + x

        if (sum1 == i):

           print(i)

print_perfect_nums(1, 300)

⬛This will give you the output.