Respuesta :
9 = 3 * 3
18 = 2 * 3 * 3
9 has factors: 1, 3, 9
18 has factors: 1, 2, 3, 6, 9, 18
18 = 2 * 3 * 3
9 has factors: 1, 3, 9
18 has factors: 1, 2, 3, 6, 9, 18