 Table of Factors, 160
 Each number can be multiplied by 1 and itself, and also:
Number Factors
2 2 is prime
3 3 is prime
4 2, 4
5 5 is prime
6 2, 3
7 7 is prime
8 2, 4
9 3
10 2, 5
11 11 is prime
12 2, 3, 4, 6
13 13 is prime
14 2, 7
15 3, 5
16 2, 4, 8
17 17 is prime
18 2, 3, 6, 9
19 19 is prime
20 2, 4, 5, 10
21 3, 7
22 2, 11
23 23
24 2, 3, 4, 6, 8, 12
25 5
26 2, 13
27 3, 9
28 2, 4, 7, 14
29 29 is prime
30 2, 3, 5, 6, 10, 15
31 31 is prime
32 2, 4, 8, 16
33 3, 11
34 2, 17
35 5, 7
36 2, 3, 4, 6, 9, 12, 18
37 37 is prime
38 2, 19
39 3, 13
40 2, 4, 5, 8, 10, 20
41 41 is prime
42 2, 3, 6, 7, 14, 21
43 43 is prime
44 2, 4, 11, 22
45 3, 5, 9, 15
46 2, 23
47 47 is prime
48 2, 3, 4, 6, 8, 12, 16, 24
49 7
50 2, 5, 10, 25
51 3, 17
52 2, 4, 13, 26
53 53 is prime
54 2, 3, 6, 9, 18, 27
55 5, 11
56 2, 4, 7, 8, 14, 28
57 3, 19
58 2, 29
59 59 is prime
60 2, 3, 4, 5, 6, 10, 12, 15, 20, 30
