#include <bits/stdc++.h>
using namespace std;
#include <chrono>
using namespace std::chrono;
#define ll long long
#define pb push_back
#define pii pair<int,int>
#define sz size()
#define all(v) v.begin(),v.end()
#define fi first
#define se second
const int N = 5e5;
const int mod = 1e9+7;
const ll INF = 1e18;
const int di[] = {1, -1, 0, 0};
const int dj[] = {0, 0, 1, -1};
set<int> ans;
vector<int> d;
void calc(int n,int x,int l=0){
if(n==1){
ans.insert(x);
return;
}
for(int i = l; i < d.sz; i++){
if(d[i]<=n && n%d[i]==0){
calc(n/d[i],x+d[i]-1,i);
}
}
}
void solve() {
int n;
cin>>n;
for(int i = 2; i*i <= n; i++){
if(n%i==0){
d.pb(i);
if(i*i!=n)
d.pb(n/i);
}
}
d.pb(n);
sort(all(d));
calc(n,0);
cout<<ans.sz<<"\n";
for(auto i: ans)
cout<<i<<" ";
cout<<"\n";
}
int main() {
//freopen("cowrun.in","r",stdin);
//freopen("cowrun.out","w",stdout);
ios_base::sync_with_stdio(false);
cin.tie(nullptr);
cout.tie(nullptr);
auto start = high_resolution_clock::now();
int t=1;
//cin>>t;
while(t--) {
solve();
}
auto stop = high_resolution_clock::now();
auto duration = duration_cast<microseconds>(stop - start);
//cout << "TIMER: " << duration.count() << "\n";
return 0;
}
