A243980 - cp's OEIS frontend

A243980 Four times the sum of all divisors of all positive integers <= n.

n	a(n)
1	4
2	16
3	32
4	60
5	84
6	132
7	164
8	224
9	276
10	348
11	396
12	508
13	564
14	660
15	756
16	880
17	952
18	1108
19	1188
20	1356
21	1484
22	1628
23	1724
24	1964
25	2088
26	2256
27	2416
28	2640
29	2760
30	3048
31	3176
32	3428
33	3620
34	3836
35	4028
36	4392
37	4544
38	4784
39	5008
40	5368
41	5536
42	5920
43	6096
44	6432
45	6744
46	7032
47	7224
48	7720

[4, 16, 32, 60, 84, 132, 164, 224, 276, 348, 396, 508, 564, 660, 756, 880, 952, 1108, 1188, 1356, 1484, 1628, 1724, 1964, 2088, 2256, 2416, 2640, 2760, 3048, 3176, 3428, 3620, 3836, 4028, 4392, 4544, 4784, 5008, 5368, 5536, 5920, 6096, 6432, 6744, 7032, 7224, 7720]

cp's OEIS Frontend

A243980 Four times the sum of all divisors of all positive integers <= n.

Table of values

List of values