Perfect Numbers Python

PROGRAM TO FIND PERFECT NUMBERS

# Returns true if n is perfect

def isPerfect( n ):

      

    # To store sum of divisors

    sum = 1

      

    # Find all divisors and add them

    i = 2

    while i * i <= n:

        if n % i == 0:

            sum = sum + i + n/i

        i += 1

      

    # If sum of divisors is equal to

    # n, then n is a perfect number

      

    return (True if sum == n and n!=1 else False)

  

# Driver program

print("Below are all perfect numbers till 10000")

n = 2

for n in range (10000):

    if isPerfect (n):

        print(n , " is a perfect number")







OUTPUT

Below are all perfect numbers til 10000
6 is a perfect number
28 is a perfect number
496 is a perfect number
8128 is a perfect number

CREDITS: https://www.geeksforgeeks.org/perfect-number/