9 groups of order 21988.
| SmallGroups | group |
|---|---|
| (21988, 1) | C4×C23×C239 #36347117 |
| (21988, 2) | Dic23×C239 #36347118 |
| (21988, 3) | C23×Dic239 #36347119 |
| (21988, 4) | Dic5497 #36347120 |
| (21988, 5) | C22×C23×C239 #36347121 |
| (21988, 6) | D23×D239 #36347122 |
| (21988, 7) | C2×C23×D239 #36347123 |
| (21988, 8) | C2×D23×C239 #36347124 |
| (21988, 9) | C2×D5497 #36347125 |