A069915 - cp's OEIS frontend

A069915 Sum of (1+phi)-divisors of n (cf. A061389).

n	a(n)
1	1
2	3
3	4
4	3
5	6
6	12
7	8
8	7
9	4
10	18
11	12
12	12
13	14
14	24
15	24
16	11
17	18
18	12
19	20
20	18
21	32
22	36
23	24
24	28
25	6
26	42
27	13
28	24
29	30
30	72
31	32
32	31
33	48
34	54
35	48
36	12
37	38
38	60
39	56
40	42
41	42
42	96
43	44
44	36
45	24
46	72
47	48
48	44
49	8
50	18
51	72
52	42
53	54
54	39
55	72
56	56
57	80
58	90
59	60
60	72
61	62
62	96
63	32
64	35
65	84
66	144
67	68
68	54
69	96
70	144
71	72

[1, 3, 4, 3, 6, 12, 8, 7, 4, 18, 12, 12, 14, 24, 24, 11, 18, 12, 20, 18, 32, 36, 24, 28, 6, 42, 13, 24, 30, 72, 32, 31, 48, 54, 48, 12, 38, 60, 56, 42, 42, 96, 44, 36, 24, 72, 48, 44, 8, 18, 72, 42, 54, 39, 72, 56, 80, 90, 60, 72, 62, 96, 32, 35, 84, 144, 68, 54, 96, 144, 72]

cp's OEIS Frontend

A069915 Sum of (1+phi)-divisors of n (cf. A061389).

Table of values

List of values

n	a(n)
1	1
2	3
3	4
4	3
5	6
6	12
7	8
8	7
9	4
10	18
11	12
12	12
13	14
14	24
15	24
16	11
17	18
18	12
19	20
20	18
21	32
22	36
23	24
24	28
25	6
26	42
27	13
28	24
29	30
30	72
31	32
32	31
33	48
34	54
35	48
36	12
37	38
38	60
39	56
40	42
41	42
42	96
43	44
44	36
45	24
46	72
47	48
48	44
49	8
50	18
51	72
52	42
53	54
54	39
55	72
56	56
57	80
58	90
59	60
60	72
61	62
62	96
63	32
64	35
65	84
66	144
67	68
68	54
69	96
70	144
71	72

n	a(n)
1	1
2	3
3	4
4	3
5	6
6	12
7	8
8	7
9	4
10	18
11	12
12	12
13	14
14	24
15	24
16	11
17	18
18	12
19	20
20	18
21	32
22	36
23	24
24	28
25	6
26	42
27	13
28	24
29	30
30	72
31	32
32	31
33	48
34	54
35	48
36	12
37	38
38	60
39	56
40	42
41	42
42	96
43	44
44	36
45	24
46	72
47	48
48	44
49	8
50	18
51	72
52	42
53	54
54	39
55	72
56	56
57	80
58	90
59	60
60	72
61	62
62	96
63	32
64	35
65	84
66	144
67	68
68	54
69	96
70	144
71	72

n	a(n)
1	1
2	3
3	4
4	3
5	6
6	12
7	8
8	7
9	4
10	18
11	12
12	12
13	14
14	24
15	24
16	11
17	18
18	12
19	20
20	18
21	32
22	36
23	24
24	28
25	6
26	42
27	13
28	24
29	30
30	72
31	32
32	31
33	48
34	54
35	48
36	12
37	38
38	60
39	56
40	42
41	42
42	96
43	44
44	36
45	24
46	72
47	48
48	44
49	8
50	18
51	72
52	42
53	54
54	39
55	72
56	56
57	80
58	90
59	60
60	72
61	62
62	96
63	32
64	35
65	84
66	144
67	68
68	54
69	96
70	144
71	72