#include <bits/stdc++.h>
using namespace std;
#define pb push_back
#define eb emplace_back
#define ppb pop_back
#define fi first
#define se second
typedef long long ll;
typedef unsigned long long ull;
typedef long double ld;
typedef pair<int, int> pii;
typedef pair<ll, int> pli;
typedef pair<ll, ll> pll;
const char nl = '\n';
map<int, set<int>> mp;
void get(int n){
if (mp[n].size()) return;
mp[n].insert(n-1);
for (int i = 2; i*i <= n; i++){
if (n % i == 0){
get(n/i);
for (int c : mp[n/i]){
mp[n].insert(i-1+c);
}
}
}
}
void solve(){
int n; cin >> n;
get(n);
cout << mp[n].size() << nl;
for (int i : mp[n]){
cout << i << ' ';
}
}
int main(){
ios_base::sync_with_stdio(0);
cin.tie(0); cout.tie(0);
int t = 1; // cin >> t;
while (t--){
solve();
}
}
