20 groups of order 20420.
| SmallGroups | group |
|---|---|
| (20420, 1) | C4×C5×C1021 #35205286 |
| (20420, 2) | Dic1021⋊C5 #35205287 |
| (20420, 3) | C4×C1021⋊C5 #35205288 |
| (20420, 4) | Dic5×C1021 #35205289 |
| (20420, 5) | C5×Dic1021 #35205290 |
| (20420, 6) | Dic5105 #35205291 |
| (20420, 7) | C22×C5×C1021 #35205292 |
| (20420, 8) | #16861391⋊C5 #35205293 |
| (20420, 9) | C2×D1021⋊C5 #35205294 |
| (20420, 10) | C22×C1021⋊C5 #35205295 |
| (20420, 11) | C5×#16861391 #35205296 |
| (20420, 12) | AGL(1,𝔽5)×C1021 #35205297 |
| (20420, 13) | #35205298 |
| (20420, 14) | #35205299 |
| (20420, 15) | #35205300 |
| (20420, 16) | #35205301 |
| (20420, 17) | D5×D1021 #35205302 |
| (20420, 18) | C2×C5×D1021 #35205303 |
| (20420, 19) | C2×D5×C1021 #35205304 |
| (20420, 20) | C2×D5105 #35205305 |