What are math or physic functions that include many magic constants. Like e = m * c (1 constant c) Or A = r * PI * 2; (1 constant PI) I know there are equatio

What are math or physic functions that include many magic constants. Like e = m * c (1 constant c) Or A = r * PI * 2; (1 constant PI) I know there are equations that contain more than 1 magic constant. what are they?