kpk dan fpb dari 18,20 dan 22

18
/\
2 9
.../\
..3 3

20
/\
2 10
..../\
...2 5

22
/\
2 11

18 = 2 x 3^2
20 = 2^2 x 5
22 = 2 x 11
KPK = 2^2 x 3^2 x 5 x 11 = 1.980
FPB = 2

kpk=2×2×3×3×5×11=1980
fpb=2