A341529 - cp's OEIS frontend

A341529 a(n) = sigma(n) * A003961(n), where A003961 shifts the prime factorization of n one step towards larger primes, and sigma is the sum of the divisors of n.

n	a(n)
1	1
2	9
3	20
4	63
5	42
6	180
7	88
8	405
9	325
10	378
11	156
12	1260
13	238
14	792
15	840
16	2511
17	342
18	2925
19	460
20	2646
21	1760
22	1404
23	696
24	8100
25	1519
26	2142
27	5000
28	5544
29	930
30	7560
31	1184
32	15309
33	3120
34	3078
35	3696
36	20475
37	1558
38	4140
39	4760
40	17010
41	1806
42	15840
43	2068
44	9828
45	13650
46	6264
47	2544
48	50220
49	6897
50	13671
51	6840
52	14994
53	3186
54	45000
55	6552
56	35640

[1, 9, 20, 63, 42, 180, 88, 405, 325, 378, 156, 1260, 238, 792, 840, 2511, 342, 2925, 460, 2646, 1760, 1404, 696, 8100, 1519, 2142, 5000, 5544, 930, 7560, 1184, 15309, 3120, 3078, 3696, 20475, 1558, 4140, 4760, 17010, 1806, 15840, 2068, 9828, 13650, 6264, 2544, 50220, 6897, 13671, 6840, 14994, 3186, 45000, 6552, 35640]

cp's OEIS Frontend

A341529 a(n) = sigma(n) * A003961(n), where A003961 shifts the prime factorization of n one step towards larger primes, and sigma is the sum of the divisors of n.

Table of values

List of values