#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); }
vector<int> ans;
map<pi, bool> dp;
int N;
void solve(int n, int x)
{
// cout << n << " " << x << endl;
if (x >= N)return ;
if (dp[{n, x}])
return;
dp[{n, x}] = 1;
if (n == 1)
{
ans.pb(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()
{
cin >> N;
solve(N, 0);
cout << ans.size() << endl;
for (int i : ans)
cout << i << " ";
}
