A379491 - cp's OEIS frontend

A379491 Multiperfect numbers k for which gcd(k,A003961(k))gcd(sigma(k),A276086(k)) is equal to gcd(k,A276086(k))gcd(sigma(k),A003961(k)), where A003961(n) is fully multiplicative with a(prime(i)) = prime(i+1), and A276086 is the primorial base exp-function.

n	a(n)
1	1
2	6
3	28
4	496
5	8128
6	30240
7	32760
8	2178540
9	23569920
10	33550336
11	45532800
12	142990848
13	459818240
14	1379454720
15	8589869056
16	43861478400
17	51001180160
18	66433720320
19	137438691328
20	153003540480
21	403031236608
22	704575228896
23	181742883469056
24	6088728021160320
25	14942123276641920
26	20158185857531904
27	275502900594021408
28	622286506811515392

[1, 6, 28, 496, 8128, 30240, 32760, 2178540, 23569920, 33550336, 45532800, 142990848, 459818240, 1379454720, 8589869056, 43861478400, 51001180160, 66433720320, 137438691328, 153003540480, 403031236608, 704575228896, 181742883469056, 6088728021160320, 14942123276641920, 20158185857531904, 275502900594021408, 622286506811515392]

cp's OEIS Frontend

A379491 Multiperfect numbers k for which gcd(k,A003961(k))gcd(sigma(k),A276086(k)) is equal to gcd(k,A276086(k))gcd(sigma(k),A003961(k)), where A003961(n) is fully multiplicative with a(prime(i)) = prime(i+1), and A276086 is the primorial base exp-function.

Table of values

List of values

cp's OEIS Frontend

A379491 Multiperfect numbers k for which gcd(k,A003961(k))*gcd(sigma(k),A276086(k)) is equal to gcd(k,A276086(k))*gcd(sigma(k),A003961(k)), where A003961(n) is fully multiplicative with a(prime(i)) = prime(i+1), and A276086 is the primorial base exp-function.

Table of values

List of values

A379491 Multiperfect numbers k for which gcd(k,A003961(k))gcd(sigma(k),A276086(k)) is equal to gcd(k,A276086(k))gcd(sigma(k),A003961(k)), where A003961(n) is fully multiplicative with a(prime(i)) = prime(i+1), and A276086 is the primorial base exp-function.