def divisor_list(N): #約数のリスト
    if N == 1: return [1]
    res = []
    for i in range(1,N):
        if i*i >= N: break
        if N%i == 0:
            res.append(i)
    if i*i == N: res.append(i)
    return sorted(res)

n = int(input())
k = int(input())

def f(d,n):
    if d < 0: return 0
    r = (d+1)
    if d >= n:
        r -= 2*(d-n+1)
    if d >= 2*n:
        r += (d-2*n+1)
    return r

ans = 0
for d in divisor_list(k):
    r = f(d-2,n)*f(k//d-2,n)
    ans += 2*r if d*d != n else r
print(ans)