N = int(input())
K = int(input())

ans = 0
for i in range(1, int(K**0.5) + 1):
    if K%i == 0:
        j = K//i

        if N >= i-1:
            p = i-1
        else:
            p = max(0, -i+1+2*N)

        if N >= j-1:
            q = j-1
        else:
            q = max(0, -j+1+2*N)


        if i != j:
            ans += p*q * 2
        else:
            ans += p*q


print(ans)