N=int(input())
K=int(input())
ans=0
for i in range(2,2*N+1):
    if i*i>K:
        break
    elif K%i==0 and K//i<=2*N:
        if i>N:
            cnt1=2*N-i+1
        else:
            cnt1=i-1
        if K//i>N:
            cnt2=2*N-(K//i)+1
        else:
            cnt2=(K//i)-1
        ans+=cnt1*cnt2
        #print(ans*2)
print(ans*2)