1862190

Appears in sequences

• Numbers k for which sigma(k)/k - 1/9 is an integer.at n=4A218414
• Numbers n of the form 4*k+2 such that (sigma(n) mod n) divides n, where sigma is given by A000203.at n=24A254999
• Numbers m such that there are at least two smaller numbers k < m with the same harmonic mean of divisors as m.at n=5A348697
• Numbers k such that k + the sum of the fourth powers of its digits is again a fourth power.at n=26A362954