cari FPB fan KPK dari 48, 54 dan 80 tolong pakai cara yaa makasih

jadikan jawaban terbaik ya..

48
/\
2 24
..../\
..2 12
....../\
.....2 6
......../\
......2 3

54
/\
2 27
..../\
...3 9
....../\
.....3 3

80
/\
2 40
..../\
...2 20
......./\
......2 10
........../\
........ 2 5

48 = 2^4 x 3
54 = 2 x 3^3
80 = 2^4 x 5
KPK = 2^4 x 3^3 x 5 = 720
FPB = 2