A096490 - cp's OEIS frontend

A096490 Numbers k such that sigma_2(k) >= (3/2) * k^2, where sigma_2(k) is the sum of the squares of the divisors of k.

n	a(n)
1	60
2	120
3	168
4	180
5	240
6	252
7	300
8	336
9	360
10	420
11	480
12	504
13	540
14	600
15	660
16	672
17	720
18	756
19	780
20	792
21	840
22	900
23	924
24	936
25	960
26	1008
27	1020
28	1080
29	1140
30	1176
31	1200
32	1260
33	1320
34	1344
35	1380
36	1440
37	1500
38	1512
39	1560
40	1584
41	1620
42	1680
43	1740
44	1764
45	1800
46	1848
47	1860

[60, 120, 168, 180, 240, 252, 300, 336, 360, 420, 480, 504, 540, 600, 660, 672, 720, 756, 780, 792, 840, 900, 924, 936, 960, 1008, 1020, 1080, 1140, 1176, 1200, 1260, 1320, 1344, 1380, 1440, 1500, 1512, 1560, 1584, 1620, 1680, 1740, 1764, 1800, 1848, 1860]

cp's OEIS Frontend

A096490 Numbers k such that sigma_2(k) >= (3/2) * k^2, where sigma_2(k) is the sum of the squares of the divisors of k.

Table of values

List of values