Write python program that asks the user to enter a positive integer N and print if N is a perfect number or not

#Write a program that asks the user to enter a positive integer N and print if N is a perfect number or not
N=int(input('enter a positive integer:'))
if N<0:
    print('invalid entry, you should enter a positive integer!')
else:
    #here we will check if N is perfect or not
    divisorsSummation=0
    for i in range(1,N):
        if N%i==0: #i is divisor on N
          divisorsSummation=divisorsSummation+i
    if divisorsSummation==N:
        print('number is perfect')
    else: print('number is not perfect')