import java.io.*;
import java.util.*;
import java.util.stream.*;

public class Main {
    public static void main(String[] args) throws Exception {
        Scanner sc = new Scanner();
        int n = sc.nextInt();
        HashSet<Answer> ans = new HashSet<>();
        for (int i = 0; i * i * 3 <= n; i++) {
            for (int j = Math.max(1, i); i * j * 2 + j * j <= n && (n - i * j) / (i + j) >= j; j++) {
                if ((n - i * j) % (i + j) == 0) {
                    int k = (n - i * j) / (i + j);
                    ans.add(new Answer(i, j, k));
                    ans.add(new Answer(i, k, j));
                    ans.add(new Answer(j, i, k));
                    ans.add(new Answer(j, k, i));
                    ans.add(new Answer(k, i, j));
                    ans.add(new Answer(k, j, i));
                }
            }
        }
        System.out.println(ans.size());
        StringBuilder sb = new StringBuilder();
        for (Answer x : ans) {
            sb.append(x).append("\n");
        }
        System.out.print(sb);
    }
    
    static class Answer {
        int a;
        int b;
        int c;
        
        public Answer(int a, int b, int c) {
            this.a = a;
            this.b = b;
            this.c = c;
        }
        
        public int hashCode() {
            return a + b + c;
        }
        
        public boolean equals(Object o) {
            Answer x = (Answer)o;
            return a == x.a && b == x.b && c == x.c;
        }
        
        public String toString() {
            return new StringBuilder().append(a).append(" ").append(b).append(" ").append(c).toString();
        }
    }
}

class Utilities {
    static String arrayToLineString(Object[] arr) {
        return Arrays.stream(arr).map(x -> x.toString()).collect(Collectors.joining("\n"));
    }
    
    static String arrayToLineString(int[] arr) {
        return String.join("\n", Arrays.stream(arr).mapToObj(String::valueOf).toArray(String[]::new));
    }
}
class Scanner {
    BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
    StringTokenizer st = new StringTokenizer("");
    StringBuilder sb = new StringBuilder();
    
    public Scanner() throws Exception {
        
    }
    
    public int nextInt() throws Exception {
        return Integer.parseInt(next());
    }
    
    public long nextLong() throws Exception {
        return Long.parseLong(next());
    }
    
    public double nextDouble() throws Exception {
        return Double.parseDouble(next());
    }
    
    public int[] nextIntArray() throws Exception {
        return Stream.of(br.readLine().split(" ")).mapToInt(Integer::parseInt).toArray();
    }
    
    public String next() throws Exception {
        while (!st.hasMoreTokens()) {
            st = new StringTokenizer(br.readLine());
        }
        return st.nextToken();
    }
    
}