N, K = map(int, input().split())
N -= K

ans = 0
for i in range(1, int(N ** 0.5)):
  if N % i == 0:
    if i <= K and N // i > K:
      ans += 1
    elif N // i > K:
      ans += 2
    elif i > K and N // i <= K:
      ans += 1

if int(N ** 0.5) - (N ** 0.5) < 10 ** 9:
  ans += 1
print(ans)