def divisors(n: int): upper = [] lower = [] i = 1 while i * i <= n: if n % i == 0: lower.append(i) if i != n // i: upper.append(n // i) i += 1 return lower + upper[::-1] n, k = map(int, input().split()) x = n - k d = divisors(x) ans = len(d) - k == 0 print(ans)