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*(i-1)*(k//i-1)
if k**(1/2) == r <= 2*n:
    c -= (r-1)**2
print(c)