A207376 - cp's OEIS frontend

A207376 Sum of central divisors of n.

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

[1, 3, 4, 2, 6, 5, 8, 6, 3, 7, 12, 7, 14, 9, 8, 4, 18, 9, 20, 9, 10, 13, 24, 10, 5, 15, 12, 11, 30, 11, 32, 12, 14, 19, 12, 6, 38, 21, 16, 13, 42, 13, 44, 15, 14, 25, 48, 14, 7, 15, 20, 17, 54, 15, 16, 15, 22, 31, 60, 16, 62, 33, 16, 8, 18, 17, 68, 21, 26, 17]

cp's OEIS Frontend

A207376 Sum of central divisors of n.

Table of values

List of values

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

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

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