A224912 - cp's OEIS frontend

A224912 Numbers m for which Sum_{i=1..k} (p(i)/(p(i)-1)) + Product_{i=1..k} (p(i)/(p(i)-1)) is an integer, where p(i) are the k prime factors of m (with multiplicity).

n	a(n)
1	2
2	3
3	4
4	8
5	16
6	32
7	36
8	64
9	72
10	108
11	128
12	144
13	200
14	256
15	288
16	396
17	512
18	528
19	576
20	588
21	1024
22	1040
23	1152
24	1296
25	2000
26	2048
27	2304
28	2320
29	2400
30	2592
31	3888
32	4096
33	4160
34	4608
35	4752
36	4800
37	5184
38	5600
39	6552
40	7200
41	8192
42	8448
43	9216
44	9600
45	9936
46	10368
47	11316
48	12000

[2, 3, 4, 8, 16, 32, 36, 64, 72, 108, 128, 144, 200, 256, 288, 396, 512, 528, 576, 588, 1024, 1040, 1152, 1296, 2000, 2048, 2304, 2320, 2400, 2592, 3888, 4096, 4160, 4608, 4752, 4800, 5184, 5600, 6552, 7200, 8192, 8448, 9216, 9600, 9936, 10368, 11316, 12000]

cp's OEIS Frontend

A224912 Numbers m for which Sum_{i=1..k} (p(i)/(p(i)-1)) + Product_{i=1..k} (p(i)/(p(i)-1)) is an integer, where p(i) are the k prime factors of m (with multiplicity).

Table of values

List of values