| d | ρ | Label | ID | ||
|---|---|---|---|---|---|
| C2×C20.Q8 | 320 | C2xC20.Q8 | 320,590 |
| extension | φ:Q→Aut N | d | ρ | Label | ID |
|---|---|---|---|---|---|
| C2.1(C20.Q8) = C20.39SD16 | central extension (φ=1) | 320 | C2.1(C20.Q8) | 320,38 | |
| C2.2(C20.Q8) = C20.31C42 | central extension (φ=1) | 320 | C2.2(C20.Q8) | 320,87 | |
| C2.3(C20.Q8) = C8.Dic10 | central stem extension (φ=1) | 80 | 4 | C2.3(C20.Q8) | 320,45 |
| C2.4(C20.Q8) = C40.6Q8 | central stem extension (φ=1) | 80 | 4 | C2.4(C20.Q8) | 320,52 |