14705145

Appears in sequences

• Numbers whose abundancy sigma(n)/n is a rational cube.at n=6A230043
• Numbers n such that rad(sigma(n)) = 2*rad(n), where the "radical" of n, rad(n), is A007947 and sigma(n) is the sum of the divisors of n.at n=15A238330
• Numbers k for which A065330(k) = A065330(sigma(k)).at n=37A336458
• Numbers whose numerator and denominator of the harmonic mean of their divisors are both 3-smooth numbers.at n=29A348867
• Odd numbers k for which A000005(k) >= A017665(k), where A000005 is the number of divisors function, and A017665 is the numerator of the abundancy ratio, sigma(k)/k.at n=4A388269
• Odd numbers k for which A000005(2*k) >= A017665(2*k), where A000005 is the number of divisors function, and A017665 is the numerator of the abundancy ratio, sigma(k)/k.at n=25A388277