\[\boxed{\mathbf{П.\ 83}}\]
\[Делители\ числа\ 84:\]
\[1,\ 2,\ 3,\ 4,\ 6,\ 7,\ 12,\ 14,\ 21,\ 28,\ 42,\ 84.\]
\[Делители\ числа\ 180:\]
\[1,\ 2,\ 3,\ 4,\ 5,\ 6,\ 9,\ 10,\ 12,\ 15,\ 18,\ 20,\ \]
\[30,\ 36,\ 45,\ 60,\ 90,\ 180.\]