#include <bits/stdc++.h>
#define rep(i, n) for (int i = 0; i < (n); ++i)

using namespace std;
using ll = long long;

int main() {
    cin.tie(nullptr) -> sync_with_stdio(false);
    
    int l = 496;
    vector<int> d;
    for (int i = 1; i*i <= l; ++i) {
        if (l%i == 0) {
            d.push_back(i);
            if (i*i != l) d.push_back(l/i);
        }
    }
    sort(d.begin(), d.end());
    
    cout << d.size() << '\n';
    rep(i, d.size()) cout << d[i] << ' ';
    
    return 0;
}