n = int(input())
k = int(input())
r = int(k**(1/2))
c = 0
for i in range(2, min(2*n, r)+1):
    if k%i == 0 <= 2*n-k//i:
        c += 2*min(i-1, 2*n-i+1)*min(k//i-1, 2*n-k//i+1)
if k**(1/2) == r <= 2*n:
    c -= min(r-1, 2*n-r+1)**2
print(c)