#randomly generate N and print all perfect numbers between 1 and N
#lets make a range for N user input
#user will enter the upper bound for value of N

import random
max=int(input("enter upper bound for random value N "))

N=random.randint(1,max)
print("all perfect numbers between 1 and",N,"are")
count_perfect=0
for num in range(1, N+1):
	sum_div=0
	for i in range(1,num):
		if(num%i==0):
			sum_div=sum_div+i
	if(sum_div==num):
		print(num)
		count_perfect=count_perfect+1

if(count_perfect==0):
	print("no perfect numbers found")