Actually, it was pretty easy. Use the 'Flat White' material on your object and the ground as well.

I use Camea 1 (top) and set the camera focal distance to something large, like 200. Then I use the 'No Atmosphere' from the 'Others' collection, turn on Ambient Occlusion in the Atmosphere Editor, set the Overall Skylight color to WHITE, and the Light balance slider all the way left to "Ambient".

Then render.

HTH, Chipp