4=1 x 2²
5=1 x 5
cmmmc al numerelor ( 4,5) = 2²×5 = 20
7 = 1×7
21 = 1×3×7
cmmmc al numerelor ( 7, 21) = 3×7 = 21
10 = 2×5
20 = 2²×5
cmmmc al numerelor ( 10, 20) = 2²×5 = 20
10 = 2×5
15 = 3×5
cmmmc al numerelor ( 10, 15) = 2×3×5 = 30
32= 2⁵
24 = 2³ x 3
cmmmc al numerelor ( 32, 24 ) = 2⁵ x 3 = 96