How to find lower bound , upper bound , greatest lower bound ,lowest upperbound from this problem?

Question

Problem : Relation $R$ from the following sets : $ xRy \iff x|y $

$A=(1,2,3,4,6,8,9,12,16,18,24,27,36,4854,72,81,108,144,162,216,324,432,648,1296)$

Question A : draw the hess diagram

Question B :

Find ub,lub,lb,glb from the following sets :

$B = (8,12,18,27)$

$C=\{12,18,36,72,108,216\}$

$D=\{6,12,18,24,36,54\}$

$E=\{6,12,36,72\}$

Now my question :

1. Is my hess diagram correct ????

2. How I can find the lub ,ub , lb ,glb ??