#include<bits/stdc++.h>
// #pragma GCC target ("avx,avx2,fma")
// #pragma GCC optimize("Ofast")
// #pragma GCC optimize("unroll-loops")
typedef long long ll;
typedef long double ld;
#define SPEED ios_base::sync_with_stdio(false); cin.tie(0), cout.tie(0)
#define rall(v) (v).rbegin(),(v).rend()
#define all(v) (v).begin(),(v).end()
#define OK cerr<<"OK"<<endl<<flush
#define pii pair<int, int>
#define pll pair<ll, ll>
#define pb push_back
#define F first
#define S second
#define y0 jahdakdh
#define y1 jahsadakdakdh
#define endl '\n'
using namespace std;
const ll MOD=1e9+7;
mt19937 rng(std::chrono::system_clock::now().time_since_epoch().count());
set<int> a[100005];
set<int> f(int n)
{
set<int> ans;
for(int i=2; i*i<=n; i++)
if(n%i==0)
{
if(n/i<=100000)
{
if(!a[n/i].size()) a[n/i]=f(n/i);
for(int u : a[n/i]) ans.insert(u+i-1);
}
else
{
set<int> w=f(n/i);
for(int u : w) ans.insert(u+i-1);
}
}
ans.insert(n-1);
return ans;
}
int main()
{
SPEED;
int n;
cin>>n;
set<int> s=f(n);
cout<<s.size()<<endl;
for(int u : s) cout<<u<<' ';
return 0;
}
