When it is divided by any of its factors
0.0053
Yes. It can be divided into -- 21 equal groups of 1 each -- 3 equal groups of 7 each -- 7 equal groups of 3 each
170 divided by 5 plus 378 divided by 6 = 97
That depends on how many groups you want.
54
7
0.1217
18
378
No.
126
343.6364