2.
243:
Divizorii sunt: 1, 3, 9, 27, 81, 243.
225:
Divizorii sunt: 1, 3, 5, 9, 15, 25, 45, 75, 225.
240:
Divizorii sunt: 1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 240.
175:
Divizorii sunt: 1, 5, 7, 25, 35, 175.
3.
D12= { 1, 2, 3, 4, 6, 12 }
M12={12, 24, 36, 48, 60, 72, 84, 96,...}
