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