a) Tìm ƯCLN(852, 192)
852 = 22.3.71 ; 192 = 26.3
ƯCLN(852, 192) = 22.3 = 12
Tìm Ư(ƯCLN(852, 192)) = ư(12)
Vậy ƯC(852, 192) = Ư(12) = {1, 2, 22, 3, 6, 12).
b) Tìm ƯCLN (80, 200, 360)
80 = 24.5 ; 200 = 23.52; *360 = 23.32.5
ƯCLN(80, 200, 360) = 23.52 = 40
Tìm Ư(ƯCLN(80, 200, 360)) = Ư(40)
Vậy Ư&C(80, 200, 360) = ư(40) = 11, 2, 4, 8, 5, 10, 20, 40).