import math
import random
import sys
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())
    if p%2==1:
        continue
    b = pow(a,p//2,N)+1
    if b == N:
        continue
    g = math.gcd(b, N)
    if g != 1:
        print('!',g,N//g, flush=True)
        sys.exit(0)