Respuesta :

16 --> 1, 2, 4, 8, 16
20 --> 1, 2, 4, 5, 10, 20
45 --> 1, 3, 5, 9, 15, 45

12 --> 12, 24, 36, 48, 60, . . .
5 --> 5, 10, 15, 20, 25, . . .
7 --> 7, 14, 21, 28, 35, . . .
the five factors are 1,2,4,8,16