#include<bits/stdc++.h>
using namespace std;
int main(){
ios::sync_with_stdio(0);
cin.tie(0);
cout.tie(0);
int n;
cin>>n;
vector<int>fake;
map<int,int>mp;
int fn=n;
for(long long i=1;i*i<=fn;i++){
if(fn%i==0){
fake.push_back(i);
if(i*i!=fn){
fake.push_back(fn/i);
}
}
}
sort(fake.begin(),fake.end());
int sz=(int)fake.size();
vector<set<int>>st(sz+1);
vector<vector<int>>allv(sz+1);
for(int i=1;i<sz;i++){
for(int j=0;j<sz;j++){
if(fake[j]%fake[i]==0){
allv[j].push_back(i);
}
}
}
for(int i=0;i<sz;i++){
mp[fake[i]]=i;
}
//cout<<"salam"<<endl;
st[0].insert(0);
for(int i=1;i<sz;i++){
//cout<<i<<" "<<fake[i]<<endl;
for(auto x:allv[i]){
int z=fake[i]/fake[x];
int w=mp[z];
for(auto y:st[w]){
st[i].insert(fake[x]-1+y);
}
}
}
int sza=st[sz-1].size();
cout<<sza<<"\n";
for(auto x:st[sz-1]){
cout<<x<<" ";
}
cout<<'\n';
}
