68985

Appears in sequences

• RMS numbers: numbers n such that root mean square of divisors of n is an integer.at n=17A140480
• Composite RMS numbers: composite numbers c such that root mean square of divisors of c is an integer.at n=13A158287
• Analog of A097717 in base 4.at n=4A249598
• Smallest multiple of n whose sum of digits is greater than n.at n=34A269332
• For any n >= 0 and k > 0, the prime(k)-adic valuation of a(n) equals the prime(k)-adic valuation of n + k (where prime(k) denotes the k-th prime).at n=52A298155
• Numbers m such that the arithmetic mean and the quadratic mean (the root mean square) of the divisors of m are both integers.at n=17A327055