A277791 - cp's OEIS frontend

A277791 Denominator of sum of reciprocals of proper divisors of n.

n	a(n)
1	1
2	1
3	1
4	2
5	1
6	6
7	1
8	4
9	3
10	10
11	1
12	4
13	1
14	14
15	15
16	8
17	1
18	9
19	1
20	20
21	21
22	22
23	1
24	24
25	5
26	26
27	9
28	28
29	1
30	30
31	1
32	16
33	33
34	34
35	35
36	2
37	1
38	38
39	39
40	40
41	1
42	42
43	1
44	44
45	45
46	46
47	1
48	16
49	7
50	25
51	51
52	52
53	1
54	54
55	55
56	8
57	57
58	58
59	1
60	60
61	1
62	62
63	63
64	32
65	65
66	6
67	1
68	68
69	69
70	70
71	1
72	36
73	1
74	74
75	25
76	76
77	77
78	78
79	1
80	16

[1, 1, 1, 2, 1, 6, 1, 4, 3, 10, 1, 4, 1, 14, 15, 8, 1, 9, 1, 20, 21, 22, 1, 24, 5, 26, 9, 28, 1, 30, 1, 16, 33, 34, 35, 2, 1, 38, 39, 40, 1, 42, 1, 44, 45, 46, 1, 16, 7, 25, 51, 52, 1, 54, 55, 8, 57, 58, 1, 60, 1, 62, 63, 32, 65, 6, 1, 68, 69, 70, 1, 36, 1, 74, 25, 76, 77, 78, 1, 16]

cp's OEIS Frontend

A277791 Denominator of sum of reciprocals of proper divisors of n.

Table of values

List of values

n	a(n)
1	1
2	1
3	1
4	2
5	1
6	6
7	1
8	4
9	3
10	10
11	1
12	4
13	1
14	14
15	15
16	8
17	1
18	9
19	1
20	20
21	21
22	22
23	1
24	24
25	5
26	26
27	9
28	28
29	1
30	30
31	1
32	16
33	33
34	34
35	35
36	2
37	1
38	38
39	39
40	40
41	1
42	42
43	1
44	44
45	45
46	46
47	1
48	16
49	7
50	25
51	51
52	52
53	1
54	54
55	55
56	8
57	57
58	58
59	1
60	60
61	1
62	62
63	63
64	32
65	65
66	6
67	1
68	68
69	69
70	70
71	1
72	36
73	1
74	74
75	25
76	76
77	77
78	78
79	1
80	16

n	a(n)
1	1
2	1
3	1
4	2
5	1
6	6
7	1
8	4
9	3
10	10
11	1
12	4
13	1
14	14
15	15
16	8
17	1
18	9
19	1
20	20
21	21
22	22
23	1
24	24
25	5
26	26
27	9
28	28
29	1
30	30
31	1
32	16
33	33
34	34
35	35
36	2
37	1
38	38
39	39
40	40
41	1
42	42
43	1
44	44
45	45
46	46
47	1
48	16
49	7
50	25
51	51
52	52
53	1
54	54
55	55
56	8
57	57
58	58
59	1
60	60
61	1
62	62
63	63
64	32
65	65
66	6
67	1
68	68
69	69
70	70
71	1
72	36
73	1
74	74
75	25
76	76
77	77
78	78
79	1
80	16

n	a(n)
1	1
2	1
3	1
4	2
5	1
6	6
7	1
8	4
9	3
10	10
11	1
12	4
13	1
14	14
15	15
16	8
17	1
18	9
19	1
20	20
21	21
22	22
23	1
24	24
25	5
26	26
27	9
28	28
29	1
30	30
31	1
32	16
33	33
34	34
35	35
36	2
37	1
38	38
39	39
40	40
41	1
42	42
43	1
44	44
45	45
46	46
47	1
48	16
49	7
50	25
51	51
52	52
53	1
54	54
55	55
56	8
57	57
58	58
59	1
60	60
61	1
62	62
63	63
64	32
65	65
66	6
67	1
68	68
69	69
70	70
71	1
72	36
73	1
74	74
75	25
76	76
77	77
78	78
79	1
80	16