60, 120, 180 and so on.
-177
21
-42
2,6
-11
141
168
-16
-5 and -10
4 and 11.
Assuming question should be ... What multiplies itself 3 times for 1728 twelve 12³ = 12 x 12 x 12 = 144 x 12 = 288 + 1,440 = 1,728
If your question is: What multiplies to 15? Answer: (1 x 15) (3 x 5)