A326065 - cp's OEIS frontend

A326065 Sum of divisors of the largest proper divisor of n: a(n) = sigma(A032742(n)).

n	a(n)
1	1
2	1
3	1
4	3
5	1
6	4
7	1
8	7
9	4
10	6
11	1
12	12
13	1
14	8
15	6
16	15
17	1
18	13
19	1
20	18
21	8
22	12
23	1
24	28
25	6
26	14
27	13
28	24
29	1
30	24
31	1
32	31
33	12
34	18
35	8
36	39
37	1
38	20
39	14
40	42
41	1
42	32
43	1
44	36
45	24
46	24
47	1
48	60
49	8
50	31
51	18
52	42
53	1
54	40
55	12
56	56
57	20
58	30
59	1
60	72
61	1
62	32
63	32
64	63
65	14
66	48
67	1
68	54
69	24
70	48
71	1
72	91
73	1
74	38
75	31
76	60
77	12
78	56
79	1
80	90
81	40
82	42
83	1
84	96
85	18
86	44
87	30
88	84
89	1
90	78
91	14

[1, 1, 1, 3, 1, 4, 1, 7, 4, 6, 1, 12, 1, 8, 6, 15, 1, 13, 1, 18, 8, 12, 1, 28, 6, 14, 13, 24, 1, 24, 1, 31, 12, 18, 8, 39, 1, 20, 14, 42, 1, 32, 1, 36, 24, 24, 1, 60, 8, 31, 18, 42, 1, 40, 12, 56, 20, 30, 1, 72, 1, 32, 32, 63, 14, 48, 1, 54, 24, 48, 1, 91, 1, 38, 31, 60, 12, 56, 1, 90, 40, 42, 1, 96, 18, 44, 30, 84, 1, 78, 14]

cp's OEIS Frontend

A326065 Sum of divisors of the largest proper divisor of n: a(n) = sigma(A032742(n)).

Table of values

List of values

n	a(n)
1	1
2	1
3	1
4	3
5	1
6	4
7	1
8	7
9	4
10	6
11	1
12	12
13	1
14	8
15	6
16	15
17	1
18	13
19	1
20	18
21	8
22	12
23	1
24	28
25	6
26	14
27	13
28	24
29	1
30	24
31	1
32	31
33	12
34	18
35	8
36	39
37	1
38	20
39	14
40	42
41	1
42	32
43	1
44	36
45	24
46	24
47	1
48	60
49	8
50	31
51	18
52	42
53	1
54	40
55	12
56	56
57	20
58	30
59	1
60	72
61	1
62	32
63	32
64	63
65	14
66	48
67	1
68	54
69	24
70	48
71	1
72	91
73	1
74	38
75	31
76	60
77	12
78	56
79	1
80	90
81	40
82	42
83	1
84	96
85	18
86	44
87	30
88	84
89	1
90	78
91	14

n	a(n)
1	1
2	1
3	1
4	3
5	1
6	4
7	1
8	7
9	4
10	6
11	1
12	12
13	1
14	8
15	6
16	15
17	1
18	13
19	1
20	18
21	8
22	12
23	1
24	28
25	6
26	14
27	13
28	24
29	1
30	24
31	1
32	31
33	12
34	18
35	8
36	39
37	1
38	20
39	14
40	42
41	1
42	32
43	1
44	36
45	24
46	24
47	1
48	60
49	8
50	31
51	18
52	42
53	1
54	40
55	12
56	56
57	20
58	30
59	1
60	72
61	1
62	32
63	32
64	63
65	14
66	48
67	1
68	54
69	24
70	48
71	1
72	91
73	1
74	38
75	31
76	60
77	12
78	56
79	1
80	90
81	40
82	42
83	1
84	96
85	18
86	44
87	30
88	84
89	1
90	78
91	14

n	a(n)
1	1
2	1
3	1
4	3
5	1
6	4
7	1
8	7
9	4
10	6
11	1
12	12
13	1
14	8
15	6
16	15
17	1
18	13
19	1
20	18
21	8
22	12
23	1
24	28
25	6
26	14
27	13
28	24
29	1
30	24
31	1
32	31
33	12
34	18
35	8
36	39
37	1
38	20
39	14
40	42
41	1
42	32
43	1
44	36
45	24
46	24
47	1
48	60
49	8
50	31
51	18
52	42
53	1
54	40
55	12
56	56
57	20
58	30
59	1
60	72
61	1
62	32
63	32
64	63
65	14
66	48
67	1
68	54
69	24
70	48
71	1
72	91
73	1
74	38
75	31
76	60
77	12
78	56
79	1
80	90
81	40
82	42
83	1
84	96
85	18
86	44
87	30
88	84
89	1
90	78
91	14