#include<bits/stdc++.h>
using namespace std;
int main()
{
	long long n,a=0,x,y,p=998244353;
	cin>>n;
	for(x=y=2;x*x<=n;y=++x)
	while(y<=n)(a+=x*(n-y+1))%=p,y*=x;
	n%=p,(a+=(n*(n+1)%p*(n+2)%p-x*(x-1)%p*(3*n+4-2*x)%p)*166374059%p+p)%=p;
	cout<<ans<<endl;
}

answer.code: In function ‘int main()’:
answer.code:10:15: error: ‘ans’ was not declared in this scope; did you mean ‘abs’?
   10 |         cout<<ans<<endl;
      |               ^~~
      |               abs