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

# 約数列挙
def make_divisors(n):
    lower_divisors , upper_divisors = [], []
    i = 1
    while i*i <= n:
        if n % i == 0:
            lower_divisors.append(i)
            if i != n // i:
                upper_divisors.append(n//i)
        i += 1
    return lower_divisors + upper_divisors[::-1]

div = make_divisors(K)

ans = 0
for v in div:
    v -= 1
    x = 0
    if v <= 2*N:
        x = min(v, v-(v-N)*2)
    v = K//(v+1)-1
    y = 0
    if v <= 2*N:
        y = min(v, v-(v-N)*2)
    ans += x * y
print(ans)