def factors(n):
    f = []

    c = 0
    while n % 2 == 0:
        n //= 2
        c += 1
    if c > 0:
        f.append((2, c))

    p = 3
    while p * p <= n:
        c = 0
        while n % p == 0:
            n //= p
            c += 1
        if c > 0:
            f.append((p, c))
        p += 2
    if n != 1:
        f.append((n, 1))

    return f

N = int(input())
ans = 1
for (p, x) in factors(N):
    ans *= sum(p**i for i in range(x + 1))
print(ans)