2.
а).1,2.
б).1,2,3,6.
в).1,2,3,4,6,12.
г).1,2,4,8,16.
д).1,2,3,6,9,18.
е).1,2,4,5,10,20.
ж).1.
з).1,2,3,4,6,8,12,16,32,48.
и).1,2,5,10,20,50,100.
к).1,2,8,13,52,100.
л).1,11,121.
м).1,2,4,16,64,128,256.
3.
а).2,4,6,8,10.
б).3,6,9,18,21.
в).4,8,12,16,20.
г).5,10,15,20,25.
д).9,18,27,36,45.
е).10,20,30,40,50
ж).6,18,24,30,36.
з).12,24,36,48,60.
и).10,20,30,40,50.
к).36,72,108,144,180.