#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define pii pair<ll, ll>
#define fi first
#define sec second
#define ld long double
const ll N = 1e5;
const ll INF = 4e18;
const ll MOD = 998244353;
vector<ll> ans;
map<pii, ll> mp;
void calc(ll idx, ll sum){
if(mp.count({idx, sum})) return;
mp[{idx, sum}] = 1;
if(idx == 1){
ans.push_back(sum);
}
for(ll i = 1; i * i <= idx; i++){
if(idx % i) continue;
if(i != 1) calc(idx / i, sum + i - 1);
if(idx / i != 1 && i != idx / i){
calc(idx / (idx / i), sum + idx / i - 1);
}
}
}
int main(){
ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
int tc = 1;
// cin >> tc;
for(;tc--;){
ll n; cin >> n;
calc(n, 0);
sort(ans.begin(), ans.end());
ans.erase(unique(ans.begin(), ans.end()), ans.end());
cout << (int)ans.size() << "\n";
for(auto i : ans) cout << i << " ";
cout << "\n";
}
}
/*
*/
