import math
import random
import sys
def power(x,n):
    if n==0:
        return 1
    elif n%2==1:
        return pow(x,n-1)*x
    else:
        return pow(x*x,n//2)
    
N = int(input())
if N%2==0:
    print('!',2,N//2, flush=True)
    sys.exit(0)
while True:
    a = random.randint(2,N-1)
    if N%a==0:
        print('!',a,N//a, flush=True)
        sys.exit(0)
    print('?',a, flush=True)
    p = int(input())
    b = power(a,p//2)+1
    if b!=N and N%b==0:
        print('!',b,N//b, flush=True)
        sys.exit(0)