import math
import statistics

def wqs(n):
    sum = 0
    for i in range(1,n):
        if n%i==0:
            sum += i

    if sum == n:
        return 1
    else:
        return 0


n = int(input())


for i in range(2,n):
    if wqs(i) == 1:
        print(i)