I suggest to use 'Local Users and groups' / 'Local groups' / ' Name' = "administrators"
And you show from the same path the members
Hope it helps
Just find out where to get the query :
SELECT DISTINCT A0.DISPLAYNAME, A0.TYPE, A2.OSTYPE, A1.DESCRIPTION, A1.MEMBERS, A1.NAME FROM Computer A0 (nolock) LEFT OUTER JOIN LocalGroups A1 (nolock) ON A0.Computer_Idn = A1.Computer_Idn LEFT OUTER JOIN Operating_System A2 (nolock) ON A0.Computer_Idn = A2.Computer_Idn WHERE (A1.NAME = N'Administrators' OR A1.NAME = N'Administrateurs') ORDER BY A0.DISPLAYNAME
I have french and english computers