Finite Group DatabasebetaFinite Group Databasebeta| order | 21640 |
| nilpotency class | 1 |
| isoclinism | isoclinic class of C1 |
| automorphism | Aut(G) = C22×C42×C5×C27 (order 8640) · Inn(G) = C1 · Out(G) = C22×C42×C5×C27 |
| homology | Abelianization (H1) = G · Schur multiplier (H2) = C1 |
| cyclic | C21640 |
| abelian | C5×C8×C541 |
| subgroup | G/H | |
|---|---|---|
| center | G | C1 |
| commutator | C1 | G |
| Frattini, cosocle | C4 | C2×C5×C541 |
| socle, prime radical | C2×C5×C541 | C4 |
| LCS | G ▷ C1 | |
| UCS | C1 ◁ G | |
16 conjugacy classes of subgroups.
21640 conjugacy classes. The character table is too large to display.
| Fitting subgroup of | Dic10820, D21640 |
| maximal subgroup of | Dic10820, D21640 |
| maximal normal subgroup of | Dic10820, D21640 |
Past the SmallGroups library coverage — no SmallGroups id.