[duda Sencilla] Delphi

[Abaco]

Graciaaaaas, ahora no da error, peeeeeeero...
Deberia devolver true con 6...
Mira asi hago en vb:

Private Sub Form_Load()
    MsgBox IsPerfectNumber(6)
End Sub

Public Function IsPerfectNumber(ByVal lNumber As Long) As Boolean
Dim x                       As Long
Dim i                       As Long
    For x = 1 To lNumber - 1
        If (lNumber Mod x = 0) Then i = i + x
    Next
    If i = lNumber Then IsPerfectNumber = True
End Function

Me podrias ayudar un pco mas?
Muchas gracias