#Get list of servers in the AD
$computers = Get-ADComputer -Filter {OperatingSystem -like "*server*"} -Properties OperatingSystem

$ComputerList = foreach ($Computer in $computers){
    #check if the computer is online.
    $PingResult = Test-NetConnection -ComputerName $computer.DNSHostName -InformationLevel Quiet -ErrorAction SilentlyContinue -WarningAction SilentlyContinue
    if ($PingResult){
        #If online try to get the memership data
        try {
            $ADSIComputer = [ADSI]("WinNT://$($Computer.DNSHostName),computer")
            $group = try{
                    $ADSIComputer.psbase.children.find('Administrators', 'Group')
                }
                Catch{
                        #Add custom name of the Administrators group here.
                    $ADSIComputer.psbase.children.find('Administrators', 'Group')
                }
            $members = $group.psbase.Invoke("members") | foreach {$_.GetType().InvokeMember("Name",  'GetProperty',  $null,  $_, $null)}
        }
        Catch {
            #Leave an emtpy entry on any errors while getting the membership data.
            $members = ""
        }
    }
    else{
        $members = ""
    }
        #Move on each member and create its enty, this helps formatting the data for Pivot tables in Excel.
    foreach($member in $members){
            #Check if the member is an AD object, CanonicalName for OU filtering in Excel.
        if($member -ne "") {$ADObject = Get-ADObject -Filter {SamAccountName -eq $member} -Properties CanonicalName}
        else {$ADObject = $null}
        if($ADObject)
        {
            $DomainMember = $True
            $ObjectType   = $ADObject.ObjectClass
            $OU = $ADObject.CanonicalName.replace("/$($ADObject.Name)","") #removes the Full Name form CanonicalName
        }
        else{
            $DomainMember = $false
            $ObjectType   = ""
            $OU = ""
        }

        [PSCustomObject]@{
            ComputerName    = $computer.DNSHostName
            PingResult      = $PingResult
            OperatingSystem = $Computer.OperatingSystem
            DomainMember    = $DomainMember
            ObjectType      = $ObjectType
            OU              = $OU
            MemberName      = $member
        }
    }

}

$ComputerList | ogv #You can change this to save as CSV or any other format.