227584

Appears in sequences

• Numbers n such that sigma(n) = 4*(n-phi(n)).at n=13A068420
• Number of (n+2) X (5+2) 0..3 arrays with every 3 X 3 subblock row and diagonal sum equal to 0 2 3 6 or 7 and every 3 X 3 column and antidiagonal sum not equal to 0 2 3 6 or 7.at n=10A252529
• Numbers m with a divisor d such that tau(d) * sigma(d) = m.at n=23A331668