[seqfan] Name for a type of set needed

[Bob Selcoe]

Hi Seqfans,

I just proposed sequence A284311, titled: "Array T(n,k) read by 
antidiagonals: T(1,k) = squarefree numbers > 1 in ascending order 
(A005117(k)); columns are non-squarefree numbers (in ascending order) with 
the exact same prime factors as T(1,k)".

So for example, Column 6 is the set whose members have prime factors {2,5}: 
{10, 20, 40, 50, 80, 100, 160, 200...}.

Is there a standard name for such sets?

Cheers,
Bob Selcoe