n, k = int(input()), int(input())
sq_k = int(k ** 0.5)

ans = 0
for i in range(1, min(sq_k + 1, 2 * n + 1)):
    if k % i: continue
    j = k // i
    if i > j: break
    if j > 2 * n: continue
    
    a = i - 1 if i <= n else 2 * n - i + 1
    b = j - 1 if j <= n else 2 * n - j + 1
    tmp = a * b
    ans += tmp if i == j else 2 * tmp

print(ans)