fn main() {
    input!{
		n: usize,
	}

	let mut imos = vec![0usize; n+9];
	for i in 1..=n {
		let mut multi = 1;
		while i * multi <= n {
			let range_min = i * multi;
			let range_max = min( i * (multi+1), n+1);
			imos[range_min] += multi; 			imos[range_max] %= MOD93;
			imos[range_max] += MOD93 - multi; 	imos[range_max] %= MOD93;
			multi += 1;
		}
	}

	let mut ans = 0;
	for i in 0..=n {
		imos[i+1] += imos[i];
		imos[i+1] %= MOD93;
		
		ans += imos[i];
		ans %= MOD93;
	}

	println!("{}", ans);
}

// const MOD17: usize = 1000000007;
const MOD93: usize = 998244353;
// const INF: usize = 1 << 60;
// let dx = vec![!0, 0, 1, 0]; // 上左下右
// let dy = vec![0, !0, 0, 1]; // 上左下右
// let d = vec!{(!0, 0), (0, !0), (1, 0), (0, 1)}; // 上左下右

#[allow(unused)]
use proconio::{input, marker::Chars, marker::Usize1};

#[allow(unused)]
use std::{
	mem::swap,
	cmp::min, cmp::max,
	cmp::Reverse,
	collections::HashSet, collections::BTreeSet,
	collections::HashMap, collections::BTreeMap,
	collections::BinaryHeap,
	collections::VecDeque,
	iter::FromIterator,
};