15 groups of order 20660.
| SmallGroups | group |
|---|---|
| (20660, 1) | C4×C5×C1033 #35207727 |
| (20660, 2) | Dic5×C1033 #35207728 |
| (20660, 3) | C5×Dic1033 #35207729 |
| (20660, 4) | Dic5165 #35207730 |
| (20660, 5) | C22×C5×C1033 #35207731 |
| (20660, 6) | C5×#16861757 #35207732 |
| (20660, 7) | AGL(1,𝔽5)×C1033 #35207733 |
| (20660, 8) | #35207734 |
| (20660, 9) | #35207735 |
| (20660, 10) | #35207736 |
| (20660, 11) | #35207737 |
| (20660, 12) | D5×D1033 #35207738 |
| (20660, 13) | C2×C5×D1033 #35207739 |
| (20660, 14) | C2×D5×C1033 #35207740 |
| (20660, 15) | C2×D5165 #35207741 |