A107749 - cp's OEIS frontend

A107749 OrdinaryUnitarySigma(n): If n = Product p_i^r_i then OUSigma(n) = Sigma(2^r_1)*UnitarySigma(n/2^r_1).

n	a(n)
1	1
2	3
3	4
4	7
5	6
6	12
7	8
8	15
9	10
10	18
11	12
12	28
13	14
14	24
15	24
16	31
17	18
18	30
19	20
20	42
21	32
22	36
23	24
24	60
25	26
26	42
27	28
28	56
29	30
30	72
31	32
32	63
33	48
34	54
35	48
36	70
37	38
38	60
39	56
40	90
41	42
42	96
43	44
44	84
45	60
46	72
47	48
48	124
49	50
50	78
51	72
52	98
53	54
54	84
55	72
56	120
57	80
58	90
59	60
60	168
61	62
62	96
63	80
64	127
65	84
66	144
67	68
68	126
69	96

[1, 3, 4, 7, 6, 12, 8, 15, 10, 18, 12, 28, 14, 24, 24, 31, 18, 30, 20, 42, 32, 36, 24, 60, 26, 42, 28, 56, 30, 72, 32, 63, 48, 54, 48, 70, 38, 60, 56, 90, 42, 96, 44, 84, 60, 72, 48, 124, 50, 78, 72, 98, 54, 84, 72, 120, 80, 90, 60, 168, 62, 96, 80, 127, 84, 144, 68, 126, 96]

cp's OEIS Frontend

A107749 OrdinaryUnitarySigma(n): If n = Product p_i^r_i then OUSigma(n) = Sigma(2^r_1)*UnitarySigma(n/2^r_1).

Table of values

List of values

n	a(n)
1	1
2	3
3	4
4	7
5	6
6	12
7	8
8	15
9	10
10	18
11	12
12	28
13	14
14	24
15	24
16	31
17	18
18	30
19	20
20	42
21	32
22	36
23	24
24	60
25	26
26	42
27	28
28	56
29	30
30	72
31	32
32	63
33	48
34	54
35	48
36	70
37	38
38	60
39	56
40	90
41	42
42	96
43	44
44	84
45	60
46	72
47	48
48	124
49	50
50	78
51	72
52	98
53	54
54	84
55	72
56	120
57	80
58	90
59	60
60	168
61	62
62	96
63	80
64	127
65	84
66	144
67	68
68	126
69	96

n	a(n)
1	1
2	3
3	4
4	7
5	6
6	12
7	8
8	15
9	10
10	18
11	12
12	28
13	14
14	24
15	24
16	31
17	18
18	30
19	20
20	42
21	32
22	36
23	24
24	60
25	26
26	42
27	28
28	56
29	30
30	72
31	32
32	63
33	48
34	54
35	48
36	70
37	38
38	60
39	56
40	90
41	42
42	96
43	44
44	84
45	60
46	72
47	48
48	124
49	50
50	78
51	72
52	98
53	54
54	84
55	72
56	120
57	80
58	90
59	60
60	168
61	62
62	96
63	80
64	127
65	84
66	144
67	68
68	126
69	96

n	a(n)
1	1
2	3
3	4
4	7
5	6
6	12
7	8
8	15
9	10
10	18
11	12
12	28
13	14
14	24
15	24
16	31
17	18
18	30
19	20
20	42
21	32
22	36
23	24
24	60
25	26
26	42
27	28
28	56
29	30
30	72
31	32
32	63
33	48
34	54
35	48
36	70
37	38
38	60
39	56
40	90
41	42
42	96
43	44
44	84
45	60
46	72
47	48
48	124
49	50
50	78
51	72
52	98
53	54
54	84
55	72
56	120
57	80
58	90
59	60
60	168
61	62
62	96
63	80
64	127
65	84
66	144
67	68
68	126
69	96