A373130 - cp's OEIS frontend

A373130 a(n) = Sum_{1 <= x_1, x_2, x_3 <= n} sigma( n/gcd(x_1, x_2, x_3, n) ).

n	a(n)
1	1
2	22
3	105
4	414
5	745
6	2310
7	2737
8	7134
9	9231
10	16390
11	15961
12	43470
13	30745
14	60214
15	78225
16	118238
17	88417
18	203082
19	137161
20	308430
21	287385
22	351142
23	291985
24	749070
25	481245
26	676390
27	767391
28	1133118
29	731641
30	1720950
31	953281
32	1924574
33	1675905
34	1945174
35	2039065
36	3821634

[1, 22, 105, 414, 745, 2310, 2737, 7134, 9231, 16390, 15961, 43470, 30745, 60214, 78225, 118238, 88417, 203082, 137161, 308430, 287385, 351142, 291985, 749070, 481245, 676390, 767391, 1133118, 731641, 1720950, 953281, 1924574, 1675905, 1945174, 2039065, 3821634]

cp's OEIS Frontend

A373130 a(n) = Sum_{1 <= x_1, x_2, x_3 <= n} sigma( n/gcd(x_1, x_2, x_3, n) ).

Table of values

List of values