#include <iostream>
#include <set>
#include <vector>
#include <cmath>

#define LL long long

using namespace std;

string str(int il, int ir){
	string ret = to_string(il);
	ret += to_string(ir);
	return ret;
}

int main () {
	
	LL n;
	cin >> n;
	
	set<string> myset;
	LL max = static_cast<LL>(sqrt(n) + 1);
	cout << max << endl;
	
	for (LL i = 1; i < max; ++i) {
		
		if (n % i != 0) continue;
		
		LL il = i;
		LL ir = n / i;
		
		myset.insert(str(il, ir));
		myset.insert(str(ir, il));
		
		cout << il << "," << ir << endl;
	}
	
	cout << myset.size() << endl;
}