import sys
read = sys.stdin.buffer.read
readline = sys.stdin.buffer.readline
readlines = sys.stdin.buffer.readlines
sys.setrecursionlimit(10 ** 7)


def make_divisors(n):
    divisors = []
    for i in range(1, int(n ** 0.5) + 1):
        if n % i == 0:
            divisors.append(i)
            divisors.append(n // i)
    return divisors


n = int(readline())
k = int(readline())
k = make_divisors(k)
ans = 0
for x, y in zip(k[::2], k[1::2]):
    xx = x - 1 if n >= x else 2 * n + 1 - x
    yy = y - 1 if n >= y else 2 * n + 1 - y
    xy = xx * yy
    if xy >= 0:
        if x != y:
            xy *= 2
        ans += xy
print(ans)