Factors for the First 50 Numbers

Factors for numbers 1 to 50
Number Factors Number of Factors
1 1*1 ---------> [1] 1 ***
2 1*2 ---------> [1, 2] 2
3 1*3 ---------> [1, 3] 2
4 1*4, 2*2 ---------> [1, 2, 4] 3 √√√
5 1*5 ---------> [1, 5] 2
6 1*6, 2*3 ---------> [1, 2, 3, 6] 4
7 1*7 ---------> [1, 7] 2
8 1*8, 2*4, ---------> [1, 2, 4, 8] 4
9 1*9, 3*3 ---------> [1, 3, 9] 3 √√√
10 1*10, 2*5 ---------> [1,2 5, 10] 4
11 1*11 ---------> [1, 11] 2
12 1*12, 2*6, 3*4 ---------> [1, 2, 3, 4, 6, 12] 6
13 1*13 ---------> [1, 2] 2
14 1*14, 2*7 ---------> [1, 2, 7, 14] 4
15 1*15, 3*5 ---------> [1, 3, 5, 15] 4
16 1*16, 2*8, 4*4 ---------> [1, 2, 4, 8, 16] 5 ∆∆∆
17 1*17 ---------> [1, 17] 2
18 1*18, 2*9, 3*6 ---------> [1, 2, 29, 18] 4
19 1*19 ---------> [1*19] 2
20 1*20, 2*10, 4*5 ---------> [1, 2, 4, 5, 10, 20] 6
21 1*21 ---------> [1, 21] 2
22 1*22, 2*11 ---------> [1, 2, 11, 11] 4
23 1*23 ---------> [1, 23] 2
24 1*24, 2*12, 3*8, 4*6 ---------> [1, 2, 3, 4, 6, 8, 12, 24] 8
25 1*25, 5*5 ---------> [1, 5, 25] 3 √√√
26 1*26, 2*13 ---------> [1, 2, 13, 26] 4
27 1*27, 3*9 ---------> [1, 3, 9, 27] 4
28 1*28, 2*14, 4*7 ---------> [1, 2, 4, 7, 14, 28] 6
29 1*29 ---------> [1, 29] 2
30 1*30, 2*15, 3*10, 5*6 ---------> [1, 2, 3, 5, 6, 10, 15, 30] ΩΩΩ
31 1* 31 ---------> [1, 31] 2
32 1*32, 2*16, 4*8 ---------> [1, 2, 3, 4, 8, 16, 32] 7  ΩΩΩ
33 1*33, 3*11 ---------> [1, 3, 11, 33] 4
34 1* 34, 2*17 ---------> [1, 2, 17, 34] 4
35 1*35, 5*7 ---------> [1, 5, 7, 35] 4
36 1*36, 2*18, 3*12, 4*9, 6*6 ---------> [1, 2, 3, 4, 6, 9, 12, 18, 36] 9 ∑∑∑
37 1*37 ---------> [1, 37] 2
38 1*38, 219, ---------> [1, 2, 19, 38] 4
39 1*39, 3*13 ---------> [1, 3, 13, 39] 4
40 1*40, 2*20, 4*10, 5*8 ---------> [1, 2, 4, 5, 8, 10, 20, 40] 8
41 1*41 ---------> [1, 41] 2
42 1*42, 2* 21, 3*14, 6*7 ---------> [1, 2, 3, 6, 7, 14, 21, 42] 8
43 1*43 ---------> [1, 43] 2
44 1*44, 2*22, 4*11, ---------> [1, 2, 4, 11, 22, 44] 6
45 1*45, 3*15, 5*9, ---------> [1, 3, 5, 9, 15, 45] 6
46 1*46, 2*23 ---------> [1, 2, 23, 46] 4
47 1*47 ---------> [1, 47] 2
48 1*48, 2*24, 3*16, 4*12, 6*8 ---------> [1,2, 3, 4, 6, 8, 12, 16, 24, 48] 10
49 1*49, 7*7 ---------> [1, 7, 49] 3 √√√
50 1*50, 2*25, 5*10, ---------> [1, 2, 5, 10, 25, 50] 6
     

 

Factors to 100.

 

Dr. Robert Sweetland's notes
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