EMI Filter design capacitors problem
The resistors are to bleed off stored charge when input power is removed.  This prevents possible dangerous voltages on terminals that are supposed to be "off".  The R11 and R12 values are strange.  They are not standard E96 or E48 values.  Also, it is common to have two resistors in series so that a short in one does not compromise the circuit, but usually they are the same value.  In higher-voltage circuits, multiple resistors in series prevent excessively high voltages on any one part.