Subgroups — #681

Order 80.

20 conjugacy classes of subgroups.

Conjugacy classes of subgroups

#	subgroup	G/H	class size	multiplicity	normal?	properties
1	C₂×C₄×C₅	C₂	1	1	yes	maximal, characteristic
2	#168	C₂	1	2	yes	maximal, complemented
3	C₂²×C₅	C₄	1	1	yes	characteristic
4	C₄×C₅	C₄	1	1	yes	characteristic
5	C₄×C₅	C₂²	1	1	yes	characteristic
6	M₁₆	—	5	1	no	maximal, Sylow
7	C₂×C₅	—	2	1	no	—
8	C₂×C₅	C₂×C₄	1	1	yes	characteristic
9	C₂×C₄	D₅	1	1	yes	characteristic
10	C₈	—	5	2	no	—
11	C₅	M₁₆	1	1	yes	characteristic, complemented, Sylow
12	C₂²	Dic₅	1	1	yes	characteristic
13	C₄	Dic₅	1	1	yes	characteristic
14	C₄	C₂×D₅	1	1	yes	characteristic
15	C₂	—	2	1	no	—
16	C₂	C₂×Dic₅	1	1	yes	characteristic

Splittings G = N ⋊ H with N normal; H ≅ G/N.

N	H ≅ G/N	type
2. #168	C₂	semidirect
11. C₅	M₁₆	semidirect

By isomorphism type — maximal subgroups of the same type appear once, whether or not they are normal.