The essential properties are the matter, and the manner of their combination the form. Thus space and time, as modes of combination of things, are dependent on monads. But as objects of sensibility, Kant claimed, form is prior to matter, i.e., space and time are conditions for the existence of senisble things. The Second Antinomy , with the Thesis representing Leibniz's view. Kant claimed what Leibniz himself recognized, that any limit to the decomposition of a sensible object would be arbitrary.
Extended things are infinitely divisible.
However, they do not have infinitely many parts.