Persons over 20: John Richard
divisors(34) = List(1, 2, 17, 34)
findNums(15) = (4,1) (5,2) (6,1) (7,4) (8,3) (8,5) (9,2) (9,4) (10,1) (10,3) (10,7) (11,2) (11,6) (11,8) (12,1) (12,5) (12,7) (13,4) (13,6) (13,10) (14,3) (14,5) (14,9)
average(List(3.5, 5.0, 4.5)) = 4.333333333333333
scalProd(List(3.5, 5.0, 4.5), List(2.0, 1.0, 3.0)) = 25.5