N = int(input())
K = int(input())
def rem(x):
    return x-1-2*(x-1-N)*(x-2>=N)+(x-1-2*N)*(x-2>=2*N)
X = 0
p = 1
while p * p < K:
    if K % p == 0:
        X += rem(p) * rem(K//p)
    p += 1
print(2*X+(p*p==K)*rem(p)*rem(p))