Tri-unitary perfect numbers: numbers k such that tsigma(k) = 2k, where tsigma(k) is the sum of the tri-unitary divisors of k (A324706).
A324707
Tri-unitary perfect numbers: numbers k such that tsigma(k) = 2k, where tsigma(k) is the sum of the tri-unitary divisors of k (A324706).
Terms
- a(0) =6a(1) =60a(2) =90a(3) =36720a(4) =47520a(5) =8173440a(6) =22276800a(7) =126463680a(8) =597542400a(9) =4201148160a(10) =287704872000
External references
- oeis: A324707