9 groups of order 21428.
| SmallGroups | group |
|---|---|
| (21428, 1) | C4×C11×C487 #36339613 |
| (21428, 2) | Dic11×C487 #36339614 |
| (21428, 3) | C11×Dic487 #36339615 |
| (21428, 4) | Dic5357 #36339616 |
| (21428, 5) | C22×C11×C487 #36339617 |
| (21428, 6) | D11×D487 #36339618 |
| (21428, 7) | C2×C11×D487 #36339619 |
| (21428, 8) | C2×D11×C487 #36339620 |
| (21428, 9) | C2×D5357 #36339621 |