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#include <bits/stdc++.h>
using namespace std;
typedef long long LL;
/**
* 功能：计算约数之和
* @param n
* @return
*/
LL getSumOfDivisors(LL x) {
//拆出所有质数因子及质数因子个数
unordered_map<int, int> primes;
for (int i = 2; i <= x / i; i++)
while (x % i == 0) {
x /= i;
primes[i]++;
}
if (x > 1) primes[x]++;
//计算约数个数
LL res = 1;
for (auto p : primes) {
LL a = p.first, b = p.second;
LL t = 1;
while (b--) t = (t * a + 1);
res = res * t;
return res;
LL res;
int main() {
//测试用例：180
//参考答案：546
int n;
cin >> n;
cout<<getSumOfDivisors(n) << endl;
return 0;
