这是我的代码，可复制

/****************************************
Note:
****************************************/
#include <queue>
#include <math.h>
#include <stack>
#include <vector>
#include <stdio.h>
#include <iostream>
#include <vector>
#include <iomanip>
#include <string.h>
#include <cstring>
#include <algorithm>
#define int long long
using namespace std;
const int N = 1e6 + 10;
const int INF = 0x3f3f3f3f;
int n;
signed main(){
cin >> n;
cout << n * 2 << endl;
for(int i=1;i<=n/2;i++){
if(n % i == 0) cout << i << " ";
}
cout << endl;
return 0;
}

#include<iostream>
using namespace std;
int n;
int main(){
	cin>>n;
	cout<<n*2<<endl;
	for(int i=1;i*2<=n;i++){
		if(n%i==0)cout<<i<<" ";
	}
	return 0;
}