#include <bits/stdc++.h>
using namespace std;
#define mp make_pair
#define fi first
#define se second
#define all(v) v.begin(),v.end()
#define allarr(a) a , a + n
#define ll long long
#define ull unsigned long long
#define pb push_back
#define fastio ios_base::sync_with_stdio(false) ; cin.tie(NULL); cout.tie(NULL)
typedef pair<int, int> pi;
typedef pair<ll,ll> pll;
typedef pair<int,pi> trp ;
typedef vector<pi> vpi;
typedef vector<pll> vpll ;
ll _abs (ll x ) { return (x>0?x:-x); }
set<int> ans ;
map<pi,bool> dp ;
void solve(int n , int x ){
// cout << n << " " << x << endl;
if( dp.count({n,x}) )return ;
dp[{n,x}] = 1 ;
if( n == 1 ){
ans.insert(x) ;
return ;
}
for(int i = 1 ; i*i <= n ; i++ ){
if( n % i == 0 ){
if( i != 1 ) solve( n/i , x + i - 1 );
solve( i , x + n/i - 1 );
}
}
}
int main(){
int n ;
cin >> n ;
solve(n,0) ;
cout << ans.size() << endl;
for(int i : ans )cout << i << " " ;
}
