разложите на простые множит.
162,512,1024,21780

162:2=8181:3=2727:3=99:3=33:3=1----------512:2=256256:2=128128:2=6464:2=3232:2=1616:2=88:2=44:2=22:2=1-----------1024: 2=512512:2=256256:2=128128:2=6464:2=3232:2=1616:2=88:2=44:2=22:2=1----------21780:2=1089010890:2=54455445:3=18151815:3=605605:5=121121:11=1111:11=1

162:2-81:9-9:3-3:3-1512:2-256:2-128:2-64:2-32:2-16:2-8:2-4:2-2:2-11024:2-512:2-201:3-67:67-121780:2-10890:2-5445:5-1089:3-363:3-121:11-11:11-1