Respuestas

2014-01-25T13:25:57+01:00
Divisores de
12: 1,2,3,4,6,12
20: 1,2,4,5,10,20
multiplos de
12: 24,36,48,60,72,84,108,120,132,144,156,168...
81:162,243...
20: 20,40,60,80,100...
2014-01-25T13:49:28+01:00
Divisores
12=1, 2, 3, 4, 6, 12
20= 1,2,4,5,10,20
Múltiples
12= 12, 24, 36, 38,60, 72,84, 106, ...infinito
81= 81, 162, 243, 324, 405, 486, 567, 648... infinito
20= 20, 40, 60, 80, 100,120, 140,160,180,200,220,240,260,280...infinito