414960

Appears in sequences

• Denominators of continued fraction convergents to sqrt(124).at n=15A041225
• Numbers that can be expressed as the difference of the squares of primes in exactly seventeen distinct ways.at n=5A092013
• Numbers with prime factorization pqrstu^4.at n=4A190388
• Numbers n such that the multiplicative group modulo n is the direct product of 7 cyclic groups.at n=28A272597
• Numbers n having a proper divisor d such that sigma(n) - k*d = k*n. Case k = 4.at n=33A291458
• Primitive 4-abundant numbers: Numbers k such that sigma(k) > 4k (A068404) all of whose proper divisors d are 4-deficient numbers (having sigma(d) < 4d).at n=30A307114
• Primitive terms of A023198: numbers k with the property sigma(k)/k >= 4 that are not divisible by any other number with that property.at n=32A392936