KPK DARI 36 dan 78 adalah
pohon faktor 36 dan 78
[tex]\begin{aligned}&~~~36~~~~~~~~~~~~~~~~~~~78\\&~~\bigwedge~~~~~~~~~~~~~~~~~~~~~\bigwedge\\&\boxed{2}~~18~~~~~~~~~~~~~~~~\boxed{2}~~39\\&~~~~~~\bigwedge~~~~~~~~~~~~~~~~~~~~~\bigwedge\\&~~~~~\boxed{2}~~9~~~~~~~~~~~~~~~~~\boxed{3}~~~\boxed{13}\\&~~~~~~~~~\bigwedge~~~~~~~~~~~~~~~~~~~~~\\&~~~~~~~\boxed{3}~~~\boxed{3}\end{aligned}[/tex]
36 = 2² × 3²
78 = 2² × 3² × 13
KPK = 2² × 3² × 13 = 468
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