Order 80.
40 conjugacy classes of subgroups.
| # | subgroup | G/H | class size | multiplicity | normal? | properties |
|---|---|---|---|---|---|---|
| 1 | C5×D4 | C2 | 1 | 1 | yes | maximal, characteristic, complemented |
| 2 | C22⋊D5 | C2 | 1 | 2 | yes | maximal, complemented |
| 3 | C2×Dic5 | C2 | 1 | 2 | yes | maximal, complemented |
| 4 | C4×D5 | C2 | 1 | 1 | yes | maximal, characteristic, complemented |
| 5 | Dic10 | C2 | 1 | 1 | yes | maximal, characteristic, complemented |
| 6 | C22×C5 | C22 | 1 | 2 | yes | — |
| 7 | C2×D5 | C22 | 1 | 1 | yes | characteristic |
| 8 | C4×C5 | C22 | 1 | 1 | yes | characteristic |
| 9 | Dic5 | C22 | 1 | 2 | yes | — |
| 10 | Dic5 | C22 | 1 | 1 | yes | characteristic |
| 11 | #41 | — | 5 | 1 | no | maximal, Sylow |
| 12 | C2×C5 | — | 2 | 2 | no | — |
| 13 | C2×C5 | C23 | 1 | 1 | yes | characteristic |
| 14 | D5 | — | 2 | 1 | no | — |
| 15 | Q8 | — | 5 | 1 | no | — |
| 16 | D4 | — | 5 | 2 | no | — |
| 17 | D4 | D5 | 1 | 1 | yes | characteristic, complemented |
| 18 | C2×C4 | — | 5 | 2 | no | — |
| 19 | C2×C4 | — | 5 | 1 | no | — |
| 20 | C5 | #41 | 1 | 1 | yes | characteristic, complemented, Sylow |
| 21 | C22 | — | 5 | 1 | no | — |
| 22 | C22 | C2×D5 | 1 | 2 | yes | — |
| 23 | C4 | — | 5 | 1 | no | — |
| 24 | C4 | — | 5 | 2 | no | — |
| 25 | C4 | C2×D5 | 1 | 1 | yes | characteristic |
| 26 | C2 | — | 2 | 2 | no | — |
| 27 | C2 | — | 10 | 1 | no | — |
| 28 | C2 | C22×D5 | 1 | 1 | yes | characteristic |
| subgroup | G/H | |
|---|---|---|
| center, Frattini | C2 | C22×D5 |
| commutator, socle, cosocle | C2×C5 | C23 |
| Fitting | C5×D4 | C2 |
| hypercenter | D4 | D5 |
| hypocenter | C5 | #41 |
| LCS | G ▷ C2×C5 ▷ C5 | |
| UCS | C1 ◁ C2 ◁ D4 | |
Splittings G = N ⋊ H with N normal; H ≅ G/N.
| N | H ≅ G/N | type |
|---|---|---|
| 1. C5×D4 | C2 | semidirect |
| 2. C22⋊D5 | C2 | semidirect |
| 3. C2×Dic5 | C2 | semidirect |
| 4. C4×D5 | C2 | semidirect |
| 5. Dic10 | C2 | semidirect |
| 17. D4 | D5 | semidirect |
| 20. C5 | #41 | semidirect |
By isomorphism type — maximal subgroups of the same type appear once, whether or not they are normal.
| subgroup | index |
|---|---|
| C5×D4 | 2 |
| C22⋊D5 | 2 |
| C2×Dic5 | 2 |
| C4×D5 | 2 |
| Dic10 | 2 |
| #41 | 5 |