Step-by-step explanation:
18
=2*9
=2*3*3
=2*32
Answer:
2*32
120
=2*60
=2*2*30
=2*2*2*15
=2*2*2*3*5
=23*3*5
Answer:
23*3*5
56
=2*28
=2*2*14
=2*2*2*7
=23*7
Answer:
23*7
390
=2*195
=2*3*65
=2*3*5*13
Answer:
2*3*5*13
144
=2*72
=2*2*36
=2*2*2*18
=2*2*2*2*9
=2*2*2*2*3*3
=24*32
Answer:
24*32
153
=3*51
=3*3*17
=32*17
Answer:
32*17
hope that helps