18 groups of order 21036.
| SmallGroups | group |
|---|---|
| (21036, 1) | C3×C4×C1753 #35230875 |
| (21036, 2) | Dic1753⋊C3 #35230876 |
| (21036, 3) | C4×C1753⋊C3 #35230877 |
| (21036, 4) | Dic3×C1753 #35230878 |
| (21036, 5) | C3×Dic1753 #35230879 |
| (21036, 6) | Dic5259 #35230880 |
| (21036, 7) | C22×C3×C1753 #35230881 |
| (21036, 8) | #20296241⋊C3 #35230882 |
| (21036, 9) | C2×D1753⋊C3 #35230883 |
| (21036, 10) | C3×#20296241 #35230884 |
| (21036, 11) | C3⋊#20296241 #35230885 |
| (21036, 12) | D3×D1753 #35230886 |
| (21036, 13) | A4×C1753 #35230887 |
| (21036, 14) | C22⋊(C1753⋊C3) #35230888 |
| (21036, 15) | C22×C1753⋊C3 #35230889 |
| (21036, 16) | C2×C3×D1753 #35230890 |
| (21036, 17) | C2×D3×C1753 #35230891 |
| (21036, 18) | C2×D5259 #35230892 |