A307893 - cp's OEIS frontend

A307893 a(n) = lcm(sigma(n), pod(n)) / n, where sigma (k) = the sum of divisors of k (A000203) and pod(n) = the product of divisors of k (A007955).

n	a(n)
1	1
2	3
3	4
4	14
5	6
6	6
7	8
8	120
9	39
10	90
11	12
12	1008
13	14
14	84
15	120
16	1984
17	18
18	4212
19	20
20	8400
21	672
22	198
23	24
24	69120
25	155
26	546
27	1080
28	784
29	30
30	27000
31	32
32	64512
33	528
34	918
35	1680
36	25474176
37	38
38	570
39	2184
40	576000
41	42
42	148176
43	44
44	40656
45	52650
46	828
47	48
48	164560896
49	399
50	232500

[1, 3, 4, 14, 6, 6, 8, 120, 39, 90, 12, 1008, 14, 84, 120, 1984, 18, 4212, 20, 8400, 672, 198, 24, 69120, 155, 546, 1080, 784, 30, 27000, 32, 64512, 528, 918, 1680, 25474176, 38, 570, 2184, 576000, 42, 148176, 44, 40656, 52650, 828, 48, 164560896, 399, 232500]

cp's OEIS Frontend

A307893 a(n) = lcm(sigma(n), pod(n)) / n, where sigma (k) = the sum of divisors of k (A000203) and pod(n) = the product of divisors of k (A007955).

Table of values

List of values