91388
domain: N
Appears in sequences
- Primitive weird numbers: weird numbers with no proper weird divisors.at n=12A002975
- Numbers k such that sigma(k) == 8 (mod k).at n=11A045770
- The floor(n/2)-perfect numbers, where f-perfect numbers for an arithmetical function f are defined in A066218.at n=7A066240
- Numbers k with abundance radius of 8, i.e., abs(sigma(k)-2*k) = 8.at n=16A088820
- Numbers k whose abundance is 8: sigma(k) - 2*k = 8.at n=7A088833
- Admirable numbers whose abundance is < 10.at n=21A109788
- Admirable numbers such that the subtracted divisor is square.at n=18A109806
- Near-multiperfects with primes and powers of 2 excluded, abs(sigma(m) mod m) <= log(m).at n=40A117348
- Near-multiperfects with primes, powers of 2 and 6 * prime excluded, abs(sigma(n) mod n) <= log(n).at n=40A117349
- Near-multiperfects with primes, powers of 2, 6 * prime and 2^n * prime excluded, abs(sigma(n) mod n) <= log(n).at n=21A117350
- Weird numbers (A006037) not divisible by 5.at n=9A138850
- Number of n X 4 1..2 arrays containing at least one of each value, all equal values connected, rows considered as a single number in nondecreasing order, and columns considered as a single number in nondecreasing order.at n=35A166805
- Primitive weird numbers (pwn) (A002975) whose abundance (A033880) is a power of 2 (A000079).at n=10A258250
- Primitive weird numbers (A002975) of the form 2^k*p*q*x with k >= 0 and odd p, q, x >= 3.at n=3A258401
- Primitive weird numbers (PWN) of the form 2^k*p*q*r with k > 0 and where p < q < r are odd primes.at n=3A258883
- Least primitive weird number, pwn, (A002975) which is divisible by the n-th prime (A000040).at n=16A265727
- Numbers k such that sigma(k) == 0 (mod k+4).at n=10A274553
- Primitive weird numbers (pwn; A002975) divisible by 4 but not 8.at n=2A322524
- Weird admirable numbers: numbers that are both weird (A006037) and admirable (A111592).at n=10A329190
- Primitive nondeficient numbers satisfying a stronger condition that compares abundancy with related numbers as detailed in the comments.at n=32A352739