// made by Tima
// 2025 will be a golden year...
#include "bits/stdc++.h"
#include <ext/pb_ds/assoc_container.hpp>
#define ll long long
#define pb push_back
#define pf push_front
#define ppb pop_back
#define ppf pop_front
// #define int long long
#define F first
#define S second
#define all(x) (x).begin(), (x).end()
#define pii pair<int,int>
#define tpii pair <pair <int,int> , int>
#define bruh cout << "NO\n"
using namespace std;
using namespace __gnu_pbds;
const int N = 3e5 + 5;
int mod = 1e9 + 7;
// const int INF = 1e18;
int n;
map <int , vector <int>> g;
map <int,int> mp;
map <int , set <int>> used;
void calc(int x){
if(x == 1 || mp[x]) return;
mp[x] = 1;
for(int i = 2 ; i * i <= x ; i++){
if(x % i == 0){
g[x].pb(i);
calc(i) , calc(x / i);
}
}
}
set <int> solve(int x){
set <int> st;
st.insert(x - 1);
if(x == 1) return st;
if(used[x].size()) return used[x];
for(auto i : g[x]){
int f = i , s = x / i;
set <int> st1 = solve(f) , st2 = solve(s);
if(f == s){
for(auto it : st1){
st.insert(it * 2);
}
}
else{
for(auto it : st1){
st.insert(it + x / i - 1);
}
for(auto it : st2){
st.insert(it + i - 1);
}
}
}
return used[x] = st;
}
void Gold(){
cin >> n;
calc(n);
set <int> st = solve(n);
cout << st.size() << '\n';
for(auto it : st){
cout << it << ' ';
}
}
//https://codeforces.com/blog/entry/133289
signed main(/*Zhunussov Temirlan*/){
//freopen("txt.in","r",stdin);freopen("txt.out","w",stdout);
ios_base::sync_with_stdio(0);cin.tie(0);
srand(time(0));
int TT = 1;
// cin >> TT;
for(int i = 1 ; i <= TT ; i++){
//cout << "Case " << i << ": ";
Gold();
}
}
