#include <bits/stdc++.h>
using namespace std;
template <class F> class y_combinator {
    F f;

   public:
    y_combinator(F&& f) : f(std::forward<F>(f)) {}
    template <class... Args> auto operator()(Args&&... args) const { return f(*this, std::forward<Args>(args)...); }
};
using ll = long long;
using ld = long double;
using u8 = uint8_t;
using u32 = uint32_t;
using u64 = uint64_t;
using vi = vector<int>;
using vl = vector<ll>;
using pii = pair<int, int>;
using pll = pair<ll, ll>;
template <class T, class U = std::less<T>> using prique = std::priority_queue<T, std::vector<T>, U>;
inline constexpr int popcnt(u64 x) noexcept { return __builtin_popcount(x); }
template <class T> T floor(T a, T b) noexcept { return a / b - (a % b && (a ^ b) < 0); }
template <class T> T ceil(T a, T b) noexcept { return floor(a + b - 1, b); }
template <class T> bool chmin(T& x, const T& y) noexcept { return (x > y ? x = y, true : false); }
template <class T> bool chmax(T& x, const T& y) noexcept { return (x < y ? x = y, true : false); }
void SCAN() {}
template <class H, class... T> void SCAN(H& h, T&... t) { std::cin >> h, SCAN(t...); }
#define INT(...)     \
    int __VA_ARGS__; \
    SCAN(__VA_ARGS__)
#define LL(...)            \
    long long __VA_ARGS__; \
    SCAN(__VA_ARGS__)
#define LD(...)              \
    long double __VA_ARGS__; \
    SCAN(__VA_ARGS__)
#define STR(...)             \
    std::string __VA_ARGS__; \
    SCAN(__VA_ARGS__)
#define CHAR(...)     \
    char __VA_ARGS__; \
    SCAN(__VA_ARGS__)
#define VEC(type, name, size)     \
    std::vector<type> name(size); \
    for (int i = 0; i < (int)size; i++) SCAN(name[i]);
#define VV(type, name, h, w)                                      \
    std::vector<std::vector<type>> name(h, std::vector<type>(w)); \
    for (int i = 0; i < (int)h; i++)                              \
        for (int j = 0; j < (int)w; j++) SCAN(name[i][j]);
#define overload4(a, b, c, d, e, ...) e
#define rep1(a) for (long long _i = 0; _i < (a); _i++)
#define rep2(i, a) for (long long i = 0; i < (a); i++)
#define rep3(i, a, b) for (long long i = (a); i < (b); i++)
#define rep4(i, a, b, c) for (long long i = (a); i < (b); i += (c))
#define rep(...) overload4(__VA_ARGS__, rep4, rep3, rep2, rep1)(__VA_ARGS__)
#define rrep(i, a, b, c) for (long long i = (a); i > (b); i += (c))
#define all(x) std::begin(x), std::end(x)
#define rall(x) std::rbegin(x), std::rend(x)
#define len(x) (long long)(size(x))
#define pb push_back
#ifndef LOCAL
#define debug(...)
#endif

#include <atcoder/modint>
using mint = atcoder::modint998244353;
void run_case() {
    LL(N);
    vector<vl> ans;
    {
        for (ll x = 0; x * x <= N; x++) {
            for (ll y = x + 1; x * y + y * y + y * x <= N; y++) {
                ll zz = N - x * y;
                if (zz % (x + y) == 0) {
                    vl t{x, y, zz / (x + y)};
                    sort(all(t));
                    do { ans.pb(t); } while (next_permutation(all(t)));
                }
            }
        }
    }
    {
        for (ll x = 1; x * x <= N; x++) {
            ll zz = N - x * x;
            if (zz % (x + x) != 0) continue;
            zz /= (x + x);
            if (zz > x) {
                vl t{x, x, zz};
                do { ans.pb(t); } while (next_permutation(all(t)));
            }
            if (zz < x) {
                vl t{zz, x, x};
                do { ans.pb(t); } while (next_permutation(all(t)));
            }
        }
    }
    {
        for (ll x = 1; x * x * 3 <= N; x++) {
            if (x * x * 3 == N) ans.pb({x, x, x});
        }
    }
    sort(all(ans));
    ans.erase(unique(all(ans)), ans.end());
    cout << len(ans) << "\n";
    for (auto v : ans) {
        cout << v[0] << " " << v[1] << " " << v[2] << "\n";
    }
}
int main() {
    std::ios_base::sync_with_stdio(false);
    std::cin.tie(nullptr);
    std::fixed(std::cout).precision(16);
    int T = 1;
    while (T--) run_case();
    return 0;
}