How to generate KPOINTS file from POSCAR file using pymatgen

I have downloaded the VASP input files from the legacy materials project database for Li3ErCl6 (mp-676361). I see the KPOINTS file with the heading “pymatgen with grid density = 732 / number of atoms” as Gamma centred. The total number of atoms in the cell is 30 as per the PSOCAR file. Please let me know how 732 points per atom are obtained.

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