#include <algorithm> 
#include <bitset> 
#include <cctype>
#include <cerrno>
#include <clocale>
#include <cmath>
#include <complex> 
#include <cstdio>
#include <cstdlib>
#include <cstring>
#include <ctime>
#include <deque> 
#include <exception>
#include <fstream>
#include <functional> 
#include <limits>
#include <list> 
#include <map> 
#include <iomanip>
#include <ios> 
#include <iosfwd> 
#include <iostream>
#include <istream> 
#include <ostream>
#include <queue> 
#include <set> 
#include <sstream> 
#include <stack> 
#include <stdexcept> 
#include <streambuf> 
#include <string> 
#include <utility> 
#include <vector> 
#include <cwchar>
#include <cwctype>
#define LL long long
using namespace std;
inline LL read()
{
	char ch=getchar();LL x=0,f=1;
	while(ch<'0'||ch>'9'){if(ch=='-')f=-1;ch=getchar();}
	while(ch>='0'&&ch<='9'){x=x*10+ch-48;ch=getchar();}
	return x*f;
}
LL gcd(int a,int b)
{
	if(a%b==0)return b;
	else return gcd(b,a%b);
}
const LL mod=998244353;
LL a,b,sum;
int main()
{
	freopen("hoip.in","r",stdin);
	freopen("hoip.out","w",stdout);
	a=read(),b=read();
	for(int i=1;i<=a;i++)
	for(int j=1;j<=b;j++)
	{
		sum+=gcd(i,j);
		sum%=mod;
	}
	cout<<sum;
	return 0;
}