[tex]\Large\boxed{\begin{array}{l}\begin{array}{c|c}\sf4,6,8,9&\sf2\\\sf2,3,4,9&\sf2\\\sf1,3,2,9&\sf2\\\sf1,3,1,9&\sf3\\\sf1,1,1,3&\sf3\\\sf1,1,1,1\end{array}\\\\\sf m\cdot m\cdot c\,(4,6,8,9)=2\cdot2\cdot2\cdot3\cdot3\\\sf m\cdot m\cdot c\,(4,6,8,9)=72\end{array}}[/tex]
