The 62B can’t be found by dividing this number by that in Alignment Settings and Report -
it’s found by trying different Max features per image and Max features per mpx Settings to find the lowest figures (Optimax) that still give same Alignment Report results as the first mega-unrestricted run.
So far, I’ve found it consistently works out at 61-62B (as above) across several differing photo sets, for all Sensor sensitivity Settings - except with Sensor sensitivity Ultra it seems to work out at 52B! (Edit - forget that - 62B it is)