A049642 - cp's OEIS frontend

A049642 Numbers k such that the number of divisors of k does not divide the sum of divisors of k.

n	a(n)
1	2
2	4
3	8
4	9
5	10
6	12
7	16
8	18
9	24
10	25
11	26
12	28
13	32
14	34
15	36
16	40
17	48
18	50
19	52
20	58
21	63
22	64
23	72
24	74
25	75
26	76
27	80
28	81
29	82
30	84
31	88
32	90
33	98
34	100
35	104
36	106
37	108
38	112
39	117
40	120
41	121
42	122
43	124
44	128
45	130
46	136
47	144
48	146
49	148
50	152
51	156
52	160
53	162
54	170
55	171
56	172
57	175

[2, 4, 8, 9, 10, 12, 16, 18, 24, 25, 26, 28, 32, 34, 36, 40, 48, 50, 52, 58, 63, 64, 72, 74, 75, 76, 80, 81, 82, 84, 88, 90, 98, 100, 104, 106, 108, 112, 117, 120, 121, 122, 124, 128, 130, 136, 144, 146, 148, 152, 156, 160, 162, 170, 171, 172, 175]

cp's OEIS Frontend

A049642 Numbers k such that the number of divisors of k does not divide the sum of divisors of k.

Table of values

List of values

n	a(n)
1	2
2	4
3	8
4	9
5	10
6	12
7	16
8	18
9	24
10	25
11	26
12	28
13	32
14	34
15	36
16	40
17	48
18	50
19	52
20	58
21	63
22	64
23	72
24	74
25	75
26	76
27	80
28	81
29	82
30	84
31	88
32	90
33	98
34	100
35	104
36	106
37	108
38	112
39	117
40	120
41	121
42	122
43	124
44	128
45	130
46	136
47	144
48	146
49	148
50	152
51	156
52	160
53	162
54	170
55	171
56	172
57	175

n	a(n)
1	2
2	4
3	8
4	9
5	10
6	12
7	16
8	18
9	24
10	25
11	26
12	28
13	32
14	34
15	36
16	40
17	48
18	50
19	52
20	58
21	63
22	64
23	72
24	74
25	75
26	76
27	80
28	81
29	82
30	84
31	88
32	90
33	98
34	100
35	104
36	106
37	108
38	112
39	117
40	120
41	121
42	122
43	124
44	128
45	130
46	136
47	144
48	146
49	148
50	152
51	156
52	160
53	162
54	170
55	171
56	172
57	175

n	a(n)
1	2
2	4
3	8
4	9
5	10
6	12
7	16
8	18
9	24
10	25
11	26
12	28
13	32
14	34
15	36
16	40
17	48
18	50
19	52
20	58
21	63
22	64
23	72
24	74
25	75
26	76
27	80
28	81
29	82
30	84
31	88
32	90
33	98
34	100
35	104
36	106
37	108
38	112
39	117
40	120
41	121
42	122
43	124
44	128
45	130
46	136
47	144
48	146
49	148
50	152
51	156
52	160
53	162
54	170
55	171
56	172
57	175