A247603 - cp's OEIS frontend

A247603 Least integer m > 0 with pi(m*n) = sigma(m), where sigma(m) is the sum of all positive divisors of m.

n	a(n)
2	1
3	2
4	23
5	61
6	8
7	22
8	16
9	12
10	202
11	386
12	30
13	36
14	174
15	10745
16	1684
17	2804
18	1616
19	40006
20	6764
21	996
22	5775
23	8131355
24	19974
25	11264
26	4446
27	27882
28	4848
29	32466
30	162712
31	532313373
32	2341816
33	30864
34	14544
35	63696
36	2880
37	390990
38	135200
39	133992
40	1331840
41	11621646
42	117990

[1, 2, 23, 61, 8, 22, 16, 12, 202, 386, 30, 36, 174, 10745, 1684, 2804, 1616, 40006, 6764, 996, 5775, 8131355, 19974, 11264, 4446, 27882, 4848, 32466, 162712, 532313373, 2341816, 30864, 14544, 63696, 2880, 390990, 135200, 133992, 1331840, 11621646, 117990]

cp's OEIS Frontend

A247603 Least integer m > 0 with pi(m*n) = sigma(m), where sigma(m) is the sum of all positive divisors of m.

Table of values

List of values