1055340196
domain: N
Appears in sequences
- Squares whose sum of divisors is a square.at n=8A008848
- Duplicate of A008848.at n=8A074387
- Numbers n such that both sigma(n) and sigma(sigma(n)) are odd numbers.at n=14A097025
- Perfect (or pure) powers pp such that sigma(pp) is also a perfect (pure) power.at n=9A128607
- Sigma-powerful numbers: powerful numbers n such that sigma(n) is also powerful. An incomplete version of A337045.at n=17A180090