A360327 - cp's OEIS frontend

A360327 a(n) is the sum of divisors of n that have only prime-indexed prime factors.

n	a(n)
1	1
2	1
3	4
4	1
5	6
6	4
7	1
8	1
9	13
10	6
11	12
12	4
13	1
14	1
15	24
16	1
17	18
18	13
19	1
20	6
21	4
22	12
23	1
24	4
25	31
26	1
27	40
28	1
29	1
30	24
31	32
32	1
33	48
34	18
35	6
36	13
37	1
38	1
39	4
40	6
41	42
42	4
43	1
44	12
45	78
46	1
47	1
48	4
49	1
50	31
51	72
52	1
53	1
54	40
55	72
56	1
57	4
58	1
59	60
60	24
61	1
62	32
63	13
64	1
65	6
66	48
67	68
68	18
69	4
70	6
71	1
72	13
73	1
74	1
75	124
76	1
77	12

[1, 1, 4, 1, 6, 4, 1, 1, 13, 6, 12, 4, 1, 1, 24, 1, 18, 13, 1, 6, 4, 12, 1, 4, 31, 1, 40, 1, 1, 24, 32, 1, 48, 18, 6, 13, 1, 1, 4, 6, 42, 4, 1, 12, 78, 1, 1, 4, 1, 31, 72, 1, 1, 40, 72, 1, 4, 1, 60, 24, 1, 32, 13, 1, 6, 48, 68, 18, 4, 6, 1, 13, 1, 1, 124, 1, 12]

cp's OEIS Frontend

A360327 a(n) is the sum of divisors of n that have only prime-indexed prime factors.

Table of values

List of values

n	a(n)
1	1
2	1
3	4
4	1
5	6
6	4
7	1
8	1
9	13
10	6
11	12
12	4
13	1
14	1
15	24
16	1
17	18
18	13
19	1
20	6
21	4
22	12
23	1
24	4
25	31
26	1
27	40
28	1
29	1
30	24
31	32
32	1
33	48
34	18
35	6
36	13
37	1
38	1
39	4
40	6
41	42
42	4
43	1
44	12
45	78
46	1
47	1
48	4
49	1
50	31
51	72
52	1
53	1
54	40
55	72
56	1
57	4
58	1
59	60
60	24
61	1
62	32
63	13
64	1
65	6
66	48
67	68
68	18
69	4
70	6
71	1
72	13
73	1
74	1
75	124
76	1
77	12

n	a(n)
1	1
2	1
3	4
4	1
5	6
6	4
7	1
8	1
9	13
10	6
11	12
12	4
13	1
14	1
15	24
16	1
17	18
18	13
19	1
20	6
21	4
22	12
23	1
24	4
25	31
26	1
27	40
28	1
29	1
30	24
31	32
32	1
33	48
34	18
35	6
36	13
37	1
38	1
39	4
40	6
41	42
42	4
43	1
44	12
45	78
46	1
47	1
48	4
49	1
50	31
51	72
52	1
53	1
54	40
55	72
56	1
57	4
58	1
59	60
60	24
61	1
62	32
63	13
64	1
65	6
66	48
67	68
68	18
69	4
70	6
71	1
72	13
73	1
74	1
75	124
76	1
77	12

n	a(n)
1	1
2	1
3	4
4	1
5	6
6	4
7	1
8	1
9	13
10	6
11	12
12	4
13	1
14	1
15	24
16	1
17	18
18	13
19	1
20	6
21	4
22	12
23	1
24	4
25	31
26	1
27	40
28	1
29	1
30	24
31	32
32	1
33	48
34	18
35	6
36	13
37	1
38	1
39	4
40	6
41	42
42	4
43	1
44	12
45	78
46	1
47	1
48	4
49	1
50	31
51	72
52	1
53	1
54	40
55	72
56	1
57	4
58	1
59	60
60	24
61	1
62	32
63	13
64	1
65	6
66	48
67	68
68	18
69	4
70	6
71	1
72	13
73	1
74	1
75	124
76	1
77	12