#include <bits/stdc++.h>
#include <atcoder/all>
using namespace std;

using isize = size_t;
using i32 = int;
using u32 = unsigned int;
using i64 = long long;
using u64 = unsigned long long;
using i128 = __int128_t;
using u128 = __uint128_t;
using f64 = long double;
using p2 = pair<i64, i64>;
using el = tuple<i64, i64, i64>;
using mint = atcoder::modint998244353;

void _main();
int main() {
  cin.tie(0);
  ios::sync_with_stdio(false);
  cout << fixed << setprecision(18);
  _main();
}

mint solve(i64 r, mint x) {
  if (r == 0) return 1;
  i64 mid = r / 2;
  if (r % 2 == 0) return solve(r - 1, x) * x + 1;
  mint res = solve(r / 2, x);
  return res + res * x.pow(r / 2 + 1);
}
void _main() {
  i64 n;
  cin >> n;
  i64 m = -1;
  mint ans = 0;
  for (i64 i = 1; n / i >= i; i++) {
    ans += mint(n / i).pow(i);
    m = i;
  }
  for (i64 i = 1; i <= 5000000; i++) {
    // n / j <= i
    // n / i <= j
    i64 r = n / i;
    i64 l = n / (i + 1);
    l = max(l, m);
    if (l >= r) continue;
    ans += solve(r, i);
    ans -= solve(l, i);
  }
  cout << ans.val() << "\n";
}