N = int(input())
K = int(input())

ans = 0
for i in range(1, int(K**0.5)+1):
    if K % i != 0:
        continue

    j = K // i
    x = min(i-1, max(0, -i + 1 + 2*N))
    y = min(j-1, max(0, -j + 1 + 2*N))

    add = x * y
    if i != j:
        add *= 2

    ans += add

print(ans)