def solve(N, K):
  X = N - K
  ans = 0
  for i in range(1, 100001):
    if i * i > N: break
    if X % i == 0:
      if i > K: ans += 1
      if i * i != X and (X // i) > K: ans += 1
  return ans

N, K = [int(x) for x in input().split()]
print(solve(N, K))