11 groups of order 20780.
| SmallGroups | group |
|---|---|
| (20780, 1) | C4×C5×C1039 #35209441 |
| (20780, 2) | Dic5×C1039 #35209442 |
| (20780, 3) | C5×Dic1039 #35209443 |
| (20780, 4) | Dic5195 #35209444 |
| (20780, 5) | C22×C5×C1039 #35209445 |
| (20780, 6) | AGL(1,𝔽5)×C1039 #35209446 |
| (20780, 7) | C1039⋊AGL(1,𝔽5) #35209447 |
| (20780, 8) | D5×D1039 #35209448 |
| (20780, 9) | C2×C5×D1039 #35209449 |
| (20780, 10) | C2×D5×C1039 #35209450 |
| (20780, 11) | C2×D5195 #35209451 |