#include <bits/stdc++.h>
using namespace std;
using lint = long long;
lint MOD = 998244353;

template<typename T>
T modpow(T a, T b, T mod=998244353) {
  T res = 1;
  while (b > 0) {
    if (b&1) (res *= a) %= mod;
    (a *= a) %= mod;
    b >>= 1;
  }
  return res;
}

template<typename T>
T modinv(T n, T mod=998244353) {
  T m = mod, u = 1, v = 0;
  while (m) {
      long long t = n / m;
      n -= t * m; swap(n, m);
      u -= t * v; swap(u, v);
  }
  u %= mod;
  if (u < 0) u += mod;
  return u;
}

int main() {
  lint n;
  cin >> n;
  lint ans = 0;
  for (lint i = 1; i <= n; i++) {
    lint a = n/i;
    lint r = n/a;
    lint len = r-i+1;
    if (a != 1) ans += modpow(a, i)*(modpow(a, len)-1+MOD)%MOD*modinv(a-1), ans %= MOD;
    else ans += len;
    i = r;
  }
  cout << ans%MOD << endl;
}