def count(n):
    m = int(n ** 0.5) + 2
    cnt = 0
    for i in range(1,m):
        if n % i == 0:
            if i > k: cnt += 1
            if n // i != i and n // i > k: cnt += 1
    return cnt

n,k = map(int,input().split())

ans = count(n-k)

print(ans)