10200236032
domain: N
Appears in sequences
- Numbers k whose average divisor is nonintegral and divides k.at n=17A046999
- Numbers m such that the sum of the first k divisors of m is equal to m for some k.at n=21A064510
- Admirable numbers that set a new record for largest subtracted divisor.at n=17A109745
- Numbers k such that sigma(k)/k = 5/2.at n=2A141643
- Numbers m with half-integral abundancy index, sigma(m)/m = k+1/2 with integer k.at n=11A159907
- Erdős-Nicolas numbers.at n=14A194472
- Numbers n such that antisigma(n) mod n = 0, where antisigma(n) = A024816(n) = sum of numbers less than n which do not divide n.at n=12A242484
- Numbers k that divide 2*sigma(k).at n=30A246454
- Harmonic numbers m with a record number k of distinct prime numbers p_i (i = 1..k) that do not divide m such that m*p_1, m*p_1*p_2, ... , m*p_1*...*p_k are all harmonic numbers.at n=7A335370
- Harmonic numbers with a record number of harmonic numbers that can be generated from them using an iterative process of multiplying by primes (see Comments).at n=12A335371