A325973 - cp's OEIS frontend

A325973 Arithmetic mean of {sum of unitary divisors} and {sum of squarefree divisors}: a(n) = (1/2) * (A034448(n) + A048250(n)).

n	a(n)
1	1
2	3
3	4
4	4
5	6
6	12
7	8
8	6
9	7
10	18
11	12
12	16
13	14
14	24
15	24
16	10
17	18
18	21
19	20
20	24
21	32
22	36
23	24
24	24
25	16
26	42
27	16
28	32
29	30
30	72
31	32
32	18
33	48
34	54
35	48
36	31
37	38
38	60
39	56
40	36
41	42
42	96
43	44
44	48
45	42
46	72
47	48
48	40
49	29
50	48
51	72
52	56
53	54
54	48
55	72
56	48
57	80
58	90
59	60
60	96
61	62
62	96
63	56
64	34
65	84
66	144
67	68
68	72
69	96
70	144
71	72
72	51
73	74
74	114
75	64
76	80
77	96
78	168
79	80
80	60
81	43
82	126

[1, 3, 4, 4, 6, 12, 8, 6, 7, 18, 12, 16, 14, 24, 24, 10, 18, 21, 20, 24, 32, 36, 24, 24, 16, 42, 16, 32, 30, 72, 32, 18, 48, 54, 48, 31, 38, 60, 56, 36, 42, 96, 44, 48, 42, 72, 48, 40, 29, 48, 72, 56, 54, 48, 72, 48, 80, 90, 60, 96, 62, 96, 56, 34, 84, 144, 68, 72, 96, 144, 72, 51, 74, 114, 64, 80, 96, 168, 80, 60, 43, 126]

cp's OEIS Frontend

A325973 Arithmetic mean of {sum of unitary divisors} and {sum of squarefree divisors}: a(n) = (1/2) * (A034448(n) + A048250(n)).

Table of values

List of values

n	a(n)
1	1
2	3
3	4
4	4
5	6
6	12
7	8
8	6
9	7
10	18
11	12
12	16
13	14
14	24
15	24
16	10
17	18
18	21
19	20
20	24
21	32
22	36
23	24
24	24
25	16
26	42
27	16
28	32
29	30
30	72
31	32
32	18
33	48
34	54
35	48
36	31
37	38
38	60
39	56
40	36
41	42
42	96
43	44
44	48
45	42
46	72
47	48
48	40
49	29
50	48
51	72
52	56
53	54
54	48
55	72
56	48
57	80
58	90
59	60
60	96
61	62
62	96
63	56
64	34
65	84
66	144
67	68
68	72
69	96
70	144
71	72
72	51
73	74
74	114
75	64
76	80
77	96
78	168
79	80
80	60
81	43
82	126

n	a(n)
1	1
2	3
3	4
4	4
5	6
6	12
7	8
8	6
9	7
10	18
11	12
12	16
13	14
14	24
15	24
16	10
17	18
18	21
19	20
20	24
21	32
22	36
23	24
24	24
25	16
26	42
27	16
28	32
29	30
30	72
31	32
32	18
33	48
34	54
35	48
36	31
37	38
38	60
39	56
40	36
41	42
42	96
43	44
44	48
45	42
46	72
47	48
48	40
49	29
50	48
51	72
52	56
53	54
54	48
55	72
56	48
57	80
58	90
59	60
60	96
61	62
62	96
63	56
64	34
65	84
66	144
67	68
68	72
69	96
70	144
71	72
72	51
73	74
74	114
75	64
76	80
77	96
78	168
79	80
80	60
81	43
82	126

n	a(n)
1	1
2	3
3	4
4	4
5	6
6	12
7	8
8	6
9	7
10	18
11	12
12	16
13	14
14	24
15	24
16	10
17	18
18	21
19	20
20	24
21	32
22	36
23	24
24	24
25	16
26	42
27	16
28	32
29	30
30	72
31	32
32	18
33	48
34	54
35	48
36	31
37	38
38	60
39	56
40	36
41	42
42	96
43	44
44	48
45	42
46	72
47	48
48	40
49	29
50	48
51	72
52	56
53	54
54	48
55	72
56	48
57	80
58	90
59	60
60	96
61	62
62	96
63	56
64	34
65	84
66	144
67	68
68	72
69	96
70	144
71	72
72	51
73	74
74	114
75	64
76	80
77	96
78	168
79	80
80	60
81	43
82	126