730125
domain: N
Appears in sequences
- Odd numbers n such that abs(sigma(n)-2n) <= n^(1/3). Abundance-radius = abs(sigma(n)-2n) does not exceed cubic root of n and n is odd.at n=15A088010
- Deficient numbers k > 1 such that k*p is abundant for all primes p dividing k.at n=28A341358
- Numbers m with deficiency 90: sigma(m) - 2*m = -90.at n=7A389702