KPK dari 56 60 dan 45 adalah
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pohon faktor dari bilangan 56, 60 & 45 :
[tex]\begin{aligned}&~~~56~~~~~~~~~~60~~~~~~~~~45\\&~~\bigwedge~~~~~~~~~\bigwedge~~~~~~~~\bigwedge\\&\boxed{2}~~28~~~~\boxed{2}~~~30~~~~\boxed{3}~~15\\&~~~~~~\bigwedge~~~~~~~~\bigwedge~~~~~~~~\bigwedge\\&~~~~~\boxed{2}~~14~~~~\boxed{2}~~~15~~~\boxed{3}~~~\boxed{5}\\&~~~~~~~~~\bigwedge~~~~~~~~\bigwedge~~~~~~~~~\\&~~~~~~\boxed{2}~~~\boxed{7}~~~\boxed{3}~~~\boxed{5}~~~\end{aligned}[/tex]
Faktorial :
56 = 2³ × 7
60 = 2² × 3 × 5
45 = 3² × 5
KPK : 2³ × 3² × 5 × 7 = 2.520
