A286758 - cp's OEIS frontend

A286758 Numbers k such that sigma(k) divides sigma(k!).

n	a(n)
1	1
2	2
3	3
4	5
5	7
6	8
7	11
8	12
9	13
10	14
11	15
12	17
13	18
14	19
15	20
16	21
17	22
18	23
19	24
20	26
21	27
22	28
23	29
24	30
25	31
26	32
27	33
28	34
29	35
30	36
31	37
32	38
33	39
34	40
35	41
36	42
37	43
38	44
39	46
40	47
41	49
42	51
43	52
44	53
45	54
46	55
47	56
48	57
49	58
50	59
51	60
52	61
53	62
54	63
55	65
56	66
57	67
58	68
59	69
60	70
61	71
62	72
63	73
64	74
65	75
66	76
67	77

[1, 2, 3, 5, 7, 8, 11, 12, 13, 14, 15, 17, 18, 19, 20, 21, 22, 23, 24, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 46, 47, 49, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77]

cp's OEIS Frontend

A286758 Numbers k such that sigma(k) divides sigma(k!).

Table of values

List of values

n	a(n)
1	1
2	2
3	3
4	5
5	7
6	8
7	11
8	12
9	13
10	14
11	15
12	17
13	18
14	19
15	20
16	21
17	22
18	23
19	24
20	26
21	27
22	28
23	29
24	30
25	31
26	32
27	33
28	34
29	35
30	36
31	37
32	38
33	39
34	40
35	41
36	42
37	43
38	44
39	46
40	47
41	49
42	51
43	52
44	53
45	54
46	55
47	56
48	57
49	58
50	59
51	60
52	61
53	62
54	63
55	65
56	66
57	67
58	68
59	69
60	70
61	71
62	72
63	73
64	74
65	75
66	76
67	77

n	a(n)
1	1
2	2
3	3
4	5
5	7
6	8
7	11
8	12
9	13
10	14
11	15
12	17
13	18
14	19
15	20
16	21
17	22
18	23
19	24
20	26
21	27
22	28
23	29
24	30
25	31
26	32
27	33
28	34
29	35
30	36
31	37
32	38
33	39
34	40
35	41
36	42
37	43
38	44
39	46
40	47
41	49
42	51
43	52
44	53
45	54
46	55
47	56
48	57
49	58
50	59
51	60
52	61
53	62
54	63
55	65
56	66
57	67
58	68
59	69
60	70
61	71
62	72
63	73
64	74
65	75
66	76
67	77

n	a(n)
1	1
2	2
3	3
4	5
5	7
6	8
7	11
8	12
9	13
10	14
11	15
12	17
13	18
14	19
15	20
16	21
17	22
18	23
19	24
20	26
21	27
22	28
23	29
24	30
25	31
26	32
27	33
28	34
29	35
30	36
31	37
32	38
33	39
34	40
35	41
36	42
37	43
38	44
39	46
40	47
41	49
42	51
43	52
44	53
45	54
46	55
47	56
48	57
49	58
50	59
51	60
52	61
53	62
54	63
55	65
56	66
57	67
58	68
59	69
60	70
61	71
62	72
63	73
64	74
65	75
66	76
67	77