N = int(input())
K = int(input())
ans = 0
for i in range(2,int(K**0.5)+1):
    if K%i == 0:
        ac = min(i-1,max(0,N*2-i+1))
        j = K//i
        bd = min(j-1,max(0,N*2-j+1))
        ans += ac*bd*2

if K**0.5 % 1 == 0:
    ans -= min(K**0.5-1,max(0,N*2-(K**0.5)+1))
print(ans)