2 × 3² × 21563

Prime Factor Structure

Factorization String 2 × 3^2 × 21563

Distinct Prime Factors 3

Square Status No

Abundance Measure Abundant

Analytical Properties

Total Divisors 12

Divisor Sum (σ) 840,996

Proper Divisor Sum 452,862

Digit Sum / Digital Root 27 (Root: 9)

Adjacent Primes #388133 ← → #388159

1 2 3 6 9 18 21,563 43,126 64,689 129,378 194,067 388,134

Iterative sequence n → n/2 (if even) or 3n+1 (if odd):

388,134 194,067 582,202 291,101 873,304 436,652 218,326 109,163 327,490 163,745 491,236 245,618 122,809 368,428 184,214 92,107 276,322 138,161 414,484 207,242 103,621 310,864 155,432 77,716 38,858 19,429 58,288 29,144 14,572 7,286 3,643 10,930 5,465 16,396 8,198 4,099 12,298 6,149 18,448 9,224 4,612 2,306 1,153 3,460 1,730 865 2,596 1,298 649 1,948 974 487 1,462 731 2,194 1,097 3,292 1,646 823 2,470

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