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

using mint = modint998244353;

const int MX = 1E6 + 5;

int main() {
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);
    int n; cin >> n;
    vector<int> pr(MX);
    vector<int> pf(MX);
    vector<vector<int>> d(MX);
    for (int i = 2; i < MX; i++) {
        if (pr[i] == 0) {
            for (int j = i; j < MX; j += i) {
                pr[j] = i;
            }
            pf[i] = 1;
        } else {
            if ((i / pr[i]) % pr[i] != 0 && pf[i / pr[i]]) {
                pf[i] = -pf[i / pr[i]];
            } else {
                pf[i] = 0;
            }
        }
        if (pf[i]) {
            for (int j = i; j < MX; j += i) {
                d[j].push_back(i);
            }
        }
    }
    vector<mint> cnt(MX), dp(n);
    for (int i = 0; i < n; i++) {
        int u; cin >> u;
        mint ans = 1;
        for (int x : d[u]) {
            ans += cnt[x] * pf[x];
        }
        dp[i] = ans;
        for (int x : d[u]) {
            cnt[x] += ans;
        }
    }
    cout << accumulate(dp.begin(), dp.end(), mint(0)).val();
}