A143112 - cp's OEIS frontend

A143112 A051731 * A032742 = sum of largest proper divisors of the divisors of n.

n	a(n)
1	1
2	2
3	2
4	4
5	2
6	6
7	2
8	8
9	5
10	8
11	2
12	14
13	2
14	10
15	8
16	16
17	2
18	18
19	2
20	20
21	10
22	14
23	2
24	30
25	7
26	16
27	14
28	26
29	2
30	32
31	2
32	32
33	14
34	20
35	10
36	44
37	2
38	22
39	16
40	44
41	2
42	42
43	2
44	38
45	26
46	26
47	2
48	62
49	9
50	38
51	20
52	44
53	2
54	54
55	14
56	58
57	22
58	32
59	2
60	80
61	2
62	34
63	34
64	64
65	16
66	62
67	2
68	56
69	26
70	58
71	2
72	96
73	2
74	40
75	38
76	62
77	14
78	72
79	2
80	92

[1, 2, 2, 4, 2, 6, 2, 8, 5, 8, 2, 14, 2, 10, 8, 16, 2, 18, 2, 20, 10, 14, 2, 30, 7, 16, 14, 26, 2, 32, 2, 32, 14, 20, 10, 44, 2, 22, 16, 44, 2, 42, 2, 38, 26, 26, 2, 62, 9, 38, 20, 44, 2, 54, 14, 58, 22, 32, 2, 80, 2, 34, 34, 64, 16, 62, 2, 56, 26, 58, 2, 96, 2, 40, 38, 62, 14, 72, 2, 92]

cp's OEIS Frontend

A143112 A051731 * A032742 = sum of largest proper divisors of the divisors of n.

Table of values

List of values

n	a(n)
1	1
2	2
3	2
4	4
5	2
6	6
7	2
8	8
9	5
10	8
11	2
12	14
13	2
14	10
15	8
16	16
17	2
18	18
19	2
20	20
21	10
22	14
23	2
24	30
25	7
26	16
27	14
28	26
29	2
30	32
31	2
32	32
33	14
34	20
35	10
36	44
37	2
38	22
39	16
40	44
41	2
42	42
43	2
44	38
45	26
46	26
47	2
48	62
49	9
50	38
51	20
52	44
53	2
54	54
55	14
56	58
57	22
58	32
59	2
60	80
61	2
62	34
63	34
64	64
65	16
66	62
67	2
68	56
69	26
70	58
71	2
72	96
73	2
74	40
75	38
76	62
77	14
78	72
79	2
80	92

n	a(n)
1	1
2	2
3	2
4	4
5	2
6	6
7	2
8	8
9	5
10	8
11	2
12	14
13	2
14	10
15	8
16	16
17	2
18	18
19	2
20	20
21	10
22	14
23	2
24	30
25	7
26	16
27	14
28	26
29	2
30	32
31	2
32	32
33	14
34	20
35	10
36	44
37	2
38	22
39	16
40	44
41	2
42	42
43	2
44	38
45	26
46	26
47	2
48	62
49	9
50	38
51	20
52	44
53	2
54	54
55	14
56	58
57	22
58	32
59	2
60	80
61	2
62	34
63	34
64	64
65	16
66	62
67	2
68	56
69	26
70	58
71	2
72	96
73	2
74	40
75	38
76	62
77	14
78	72
79	2
80	92

n	a(n)
1	1
2	2
3	2
4	4
5	2
6	6
7	2
8	8
9	5
10	8
11	2
12	14
13	2
14	10
15	8
16	16
17	2
18	18
19	2
20	20
21	10
22	14
23	2
24	30
25	7
26	16
27	14
28	26
29	2
30	32
31	2
32	32
33	14
34	20
35	10
36	44
37	2
38	22
39	16
40	44
41	2
42	42
43	2
44	38
45	26
46	26
47	2
48	62
49	9
50	38
51	20
52	44
53	2
54	54
55	14
56	58
57	22
58	32
59	2
60	80
61	2
62	34
63	34
64	64
65	16
66	62
67	2
68	56
69	26
70	58
71	2
72	96
73	2
74	40
75	38
76	62
77	14
78	72
79	2
80	92