45356

Appears in sequences

• Primitive weird numbers: weird numbers with no proper weird divisors.at n=9A002975
• Stopping times.at n=13A007186
• Numbers k such that sigma(k) == 8 (mod k).at n=9A045770
• The floor(n/2)-perfect numbers, where f-perfect numbers for an arithmetical function f are defined in A066218.at n=6A066240
• Even and odd solutions to abs(sigma(x)-2x) <= log(x). Numbers n whose abundance-radius does not exceed log(n).at n=46A088011
• Numbers k with abundance radius of 8, i.e., abs(sigma(k)-2*k) = 8.at n=12A088820
• Numbers k whose abundance is 8: sigma(k) - 2*k = 8.at n=5A088833
• Admirable Harshad numbers such that the subtracted divisor is also a Harshad number.at n=25A109396
• Admirable numbers whose abundance is < 10.at n=19A109788
• Admirable numbers such that the subtracted divisor is square.at n=15A109806
• Phi(A033631(n)) {phi is the Euler totient function A000010}.at n=19A115620
• Near-multiperfects with primes and powers of 2 excluded, abs(sigma(m) mod m) <= log(m).at n=36A117348
• Near-multiperfects with primes, powers of 2 and 6 * prime excluded, abs(sigma(n) mod n) <= log(n).at n=36A117349
• Near-multiperfects with primes, powers of 2, 6 * prime and 2^n * prime excluded, abs(sigma(n) mod n) <= log(n).at n=17A117350
• Weird numbers (A006037) not divisible by 5.at n=6A138850
• Primitive weird numbers (pwn) (A002975) whose abundance (A033880) is a power of 2 (A000079).at n=8A258250
• Primitive weird numbers (A002975) of the form 2^k*p*q*x with k >= 0 and odd p, q, x >= 3.at n=2A258401
• 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=2A258883
• Denominator of Product_{j=1..n-1} ((3*j+1)/(3*j+2)).at n=10A271920
• Denominator of n*Product_{j=1..n-1} ((3*j + 1)/(3*j + 2)).at n=10A271922