#include <bits/stdc++.h>
#define ld long double
#define endl "\n"
#define fastio ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);
#define pb(x) push_back(x)
#define mp(a,b) make_pair(a,b)
#define ms(v,x) memset(v,x,sizeof(v))
#define all(v) v.begin(),v.end()
#define ff first
#define ss second
#define rep(i, a, b) for(int i = a; i < (b); ++i)
#define per(i, a, b) for(int i = b-1; i>=a ; i--)
#define trav(a, x) for(auto& a : x)
#define allin(a , x) for(auto a : x)
#define Unique(v) sort(all(v));v.erase(unique(all(v)),v.end());
#define sz(v) (int)v.size()
//#define int long long
using namespace std;
typedef vector<int> vi;
#define y1 abacaba
#define left sefude
#define db(x) cerr << #x <<" == "<<x << endl;
#define db2(x,y) cerr<<#x <<" == "<<x<<", "<<#y<<" == "<<y<<endl;
#define db3(x,y,z) cerr << #x<<" == "<<x<<", "<<#y<<" == "<<y<<", "<<#z<<" == "<<z<<endl;
typedef long long ll;
typedef pair<int,int> pii;
inline ll mod(ll n, ll m ){ ll ret = n%m; if(ret < 0) ret += m; return ret; }
ll gcd(ll a, ll b){return (b == 0LL ? a : gcd(b, a%b));}
ll exp(ll a,ll b,ll m){
if(b==0LL) return 1LL;
if(b==1LL) return mod(a,m);
ll k = mod(exp(a,b/2,m),m);
if(b&1LL){
return mod(a*mod(k*k,m),m);
}
else return mod(k*k,m);
}
map<int,bool> ok;
map<pii,bool> vis;
vi usefull;
void go(int n,int sum){
if(vis[pii(n,sum)])return;
vis[pii(n,sum)] = 1;
if(n == 1){ok[sum] = 1;return;}
for(int i : usefull){
if(i > n)break;
if(n%i == 0)go(n/i,sum + i - 1);
}
return;
}
void divi(int n){
for(int i=1;i*i<=n;i++){
if(n%i==0){
if(i!=1)usefull.pb(i);
if(n/i!=i)usefull.pb(n/i);
}
}
}
int32_t main(){
fastio;
int n;
cin >> n;
divi(n);
sort(all(usefull));
//for(n=1;n<=50;n++){
go(n,0);
/* vis[{1,0}] = 1;
for(int i : usefull){
for(auto it : vis){
if(it.ff.ff * i > n)break;
if(used[it.ff.ff * i]){
vis[{it.ff.ff * i,it.ff.ss + i-1}] = 1;
}
}
}
for(auto it : vis){
if(it.ff.ff == n)ok[it.ff.ss]=1;
}
*/
int cnt=0;
// cout << n <<": ";
//cout << cnt << " - "<<divi(n) << endl;
cout << sz(ok) << endl;
for(auto it : ok){
cout << it.ff <<" ";
}
cout << endl;
// }
// math -> gcd it all
// Did u check N=1? Did you switch N,M?
}
