90,126,196 mencari kpk

90 = 2 × 3^2 × 5
126 = 2 × 3^2 × 7
196 = 2^2 × 7^2
KPK = 2^2 × 3^2 × 5 × 7^2 = ( 4 × 9 ) × 5 × 49 = ( 36 × 5 ) × 49 = 180 × 49 = 8.820
Jadi, KPK dari 90, 126, 196 adalah 8.820