A191161 - cp's OEIS frontend

A191161 Hypersigma(n), definition 2: sum of the divisors of n plus the recursive sum of the divisors of the proper divisors.

n	a(n)
1	1
2	4
3	5
4	12
5	7
6	22
7	9
8	32
9	19
10	30
11	13
12	72
13	15
14	38
15	37
16	80
17	19
18	90
19	21
20	96
21	47
22	54
23	25
24	208
25	39
26	62
27	65
28	120
29	31
30	178
31	33
32	192
33	67
34	78
35	65
36	316
37	39
38	86
39	77
40	272
41	43
42	222
43	45
44	168
45	147
46	102
47	49
48	560
49	67
50	174
51	97
52	192
53	55

[1, 4, 5, 12, 7, 22, 9, 32, 19, 30, 13, 72, 15, 38, 37, 80, 19, 90, 21, 96, 47, 54, 25, 208, 39, 62, 65, 120, 31, 178, 33, 192, 67, 78, 65, 316, 39, 86, 77, 272, 43, 222, 45, 168, 147, 102, 49, 560, 67, 174, 97, 192, 55]

cp's OEIS Frontend

A191161 Hypersigma(n), definition 2: sum of the divisors of n plus the recursive sum of the divisors of the proper divisors.

Table of values

List of values

n	a(n)
1	1
2	4
3	5
4	12
5	7
6	22
7	9
8	32
9	19
10	30
11	13
12	72
13	15
14	38
15	37
16	80
17	19
18	90
19	21
20	96
21	47
22	54
23	25
24	208
25	39
26	62
27	65
28	120
29	31
30	178
31	33
32	192
33	67
34	78
35	65
36	316
37	39
38	86
39	77
40	272
41	43
42	222
43	45
44	168
45	147
46	102
47	49
48	560
49	67
50	174
51	97
52	192
53	55

n	a(n)
1	1
2	4
3	5
4	12
5	7
6	22
7	9
8	32
9	19
10	30
11	13
12	72
13	15
14	38
15	37
16	80
17	19
18	90
19	21
20	96
21	47
22	54
23	25
24	208
25	39
26	62
27	65
28	120
29	31
30	178
31	33
32	192
33	67
34	78
35	65
36	316
37	39
38	86
39	77
40	272
41	43
42	222
43	45
44	168
45	147
46	102
47	49
48	560
49	67
50	174
51	97
52	192
53	55

n	a(n)
1	1
2	4
3	5
4	12
5	7
6	22
7	9
8	32
9	19
10	30
11	13
12	72
13	15
14	38
15	37
16	80
17	19
18	90
19	21
20	96
21	47
22	54
23	25
24	208
25	39
26	62
27	65
28	120
29	31
30	178
31	33
32	192
33	67
34	78
35	65
36	316
37	39
38	86
39	77
40	272
41	43
42	222
43	45
44	168
45	147
46	102
47	49
48	560
49	67
50	174
51	97
52	192
53	55