A328051 - cp's OEIS frontend

A328051 Numbers m such that sigma(m)/(d(m)*sopf(m)) is an integer, where d is the number of divisors (A000005) and sopf the sum of prime factors without repetition (A008472).

n	a(n)
1	20
2	35
3	42
4	54
5	140
6	189
7	195
8	207
9	209
10	276
11	378
12	464
13	470
14	500
15	506
16	510
17	527
18	540
19	608
20	660
21	672
22	741
23	846
24	864
25	875
26	899
27	923
28	945
29	989
30	1029
31	1120
32	1276
33	1316
34	1323
35	1334
36	1349
37	1365
38	1519
39	1539
40	1564
41	1595
42	1715
43	1725
44	1736
45	1755
46	1815
47	1880
48	1887
49	1914
50	2058

[20, 35, 42, 54, 140, 189, 195, 207, 209, 276, 378, 464, 470, 500, 506, 510, 527, 540, 608, 660, 672, 741, 846, 864, 875, 899, 923, 945, 989, 1029, 1120, 1276, 1316, 1323, 1334, 1349, 1365, 1519, 1539, 1564, 1595, 1715, 1725, 1736, 1755, 1815, 1880, 1887, 1914, 2058]

cp's OEIS Frontend

A328051 Numbers m such that sigma(m)/(d(m)*sopf(m)) is an integer, where d is the number of divisors (A000005) and sopf the sum of prime factors without repetition (A008472).

Table of values

List of values