A292422 - cp's OEIS frontend

A292422 Numbers of the form x = 2^kpq, p,q odd primes, such that sigma(x)/phi(x) = 4.

n	a(n)
1	418
2	3596
3	3956
4	5396
5	8636
6	41656
7	56536
8	393104
9	2072608
10	2316448
11	6543008
12	17434528
13	135394432
14	217023616
15	1264918784
16	1490909824
17	2710540544
18	11444858368
19	17669583104
20	34797058304
21	37698861568
22	70572901376
23	132968907776
24	226965472256
25	233356030976
26	552070776832
27	596357220352
28	601188468736

[418, 3596, 3956, 5396, 8636, 41656, 56536, 393104, 2072608, 2316448, 6543008, 17434528, 135394432, 217023616, 1264918784, 1490909824, 2710540544, 11444858368, 17669583104, 34797058304, 37698861568, 70572901376, 132968907776, 226965472256, 233356030976, 552070776832, 596357220352, 601188468736]

cp's OEIS Frontend

A292422 Numbers of the form x = 2^kpq, p,q odd primes, such that sigma(x)/phi(x) = 4.

Table of values

List of values

cp's OEIS Frontend

A292422 Numbers of the form x = 2^k*p*q, p,q odd primes, such that sigma(x)/phi(x) = 4.

Table of values

List of values

A292422 Numbers of the form x = 2^kpq, p,q odd primes, such that sigma(x)/phi(x) = 4.