A126028 - cp's OEIS frontend

A126028 Perfect square roots: numbers n such that (sopfr(n)*d(n))^2 = sigma(n) where sopfr = sum of prime factors with multiplicity (A001414), d(n) = number of divisors of n, sigma(n) = sum of divisors of n.

n	a(n)
1	22446139
2	26116291
3	28097023
4	30236557
5	31090489
6	31124341
7	49941589
8	61137673
9	62224039
10	66960589
11	71334867
12	71585139
13	82266591
14	83045869
15	88658031
16	92346023
17	92837591
18	105183961
19	114762567
20	123563821
21	129616270
22	130399138
23	131494219
24	134156197

[22446139, 26116291, 28097023, 30236557, 31090489, 31124341, 49941589, 61137673, 62224039, 66960589, 71334867, 71585139, 82266591, 83045869, 88658031, 92346023, 92837591, 105183961, 114762567, 123563821, 129616270, 130399138, 131494219, 134156197]

cp's OEIS Frontend

A126028 Perfect square roots: numbers n such that (sopfr(n)*d(n))^2 = sigma(n) where sopfr = sum of prime factors with multiplicity (A001414), d(n) = number of divisors of n, sigma(n) = sum of divisors of n.

Table of values

List of values