calculati:
(2,3) (4,6) [3,4,5]
(2,4,8) (30,70) [2,4,5]
(3,6) (288,1260) [48,144]
(6,9,12) [2,4]
[12,24] [6,12]
(4,18) [3,6,12]
[12,24] [288,1260]