A329879 - cp's OEIS frontend

A329879 Numbers k such that k and nusigma(k) have the same set of prime divisors, where nusigma(k) is the sum of nonunitary divisors of k (A048146).

n	a(n)
1	4
2	9
3	24
4	25
5	49
6	54
7	112
8	121
9	150
10	169
11	289
12	294
13	361
14	480
15	529
16	726
17	750
18	841
19	961
20	1014
21	1369
22	1681
23	1734
24	1849
25	1984
26	2058
27	2166
28	2209
29	2430
30	2520
31	2688
32	2809
33	3174
34	3481
35	3721
36	3780
37	4489
38	5041
39	5046
40	5329
41	5760
42	5766
43	6241
44	6889
45	7921
46	7986
47	8214
48	8700

[4, 9, 24, 25, 49, 54, 112, 121, 150, 169, 289, 294, 361, 480, 529, 726, 750, 841, 961, 1014, 1369, 1681, 1734, 1849, 1984, 2058, 2166, 2209, 2430, 2520, 2688, 2809, 3174, 3481, 3721, 3780, 4489, 5041, 5046, 5329, 5760, 5766, 6241, 6889, 7921, 7986, 8214, 8700]

cp's OEIS Frontend

A329879 Numbers k such that k and nusigma(k) have the same set of prime divisors, where nusigma(k) is the sum of nonunitary divisors of k (A048146).

Table of values

List of values