#include "bits/stdc++.h"
using namespace std;

#define int long long
#define REP(i, n) for(int i=0; i<(n); i++)
#define FOR(i, a, b) for(int i=(a);i<(b);i++)
int gcd(int a, int b) { if (!b) return a; return gcd(b, a%b); }

int N,T;
signed main()
{
    cin >> N;
    int g;
    map<int, int> I;
    if (N % 2) {
        g = N;
    } else {
        g = N/2;
    }
    FOR(k,2,1e9) {
        while(g % k == 0) {
            g /= k;
            I[k]++;
        }
        if (g == 1) break;
    }
    if (g > 1) I[g]++;
    int ans = 1;
    for (auto&& kv : I) {
        int s = 1;
        REP(i,kv.second) {
            s += kv.first * (i + 1);
        }
        ans *= s;
    }
    cout << ans << endl;

    return 0;
}