2 × 5² × 421

Prime Factor Structure

Factorization String 2 × 5^2 × 421

Distinct Prime Factors 3

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 12

Divisor Sum (σ) 39,246

Proper Divisor Sum 18,196

Digit Sum / Digital Root 8 (Root: 8)

Adjacent Primes #21031 ← → #21059

1 2 5 10 25 50 421 842 2,105 4,210 10,525 21,050

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

21,050 10,525 31,576 15,788 7,894 3,947 11,842 5,921 17,764 8,882 4,441 13,324 6,662 3,331 9,994 4,997 14,992 7,496 3,748 1,874 937 2,812 1,406 703 2,110 1,055 3,166 1,583 4,750 2,375 7,126 3,563 10,690 5,345 16,036 8,018 4,009 12,028 6,014 3,007 9,022 4,511 13,534 6,767 20,302 10,151 30,454 15,227 45,682 22,841 68,524 34,262 17,131 51,394 25,697 77,092 38,546 19,273 57,820 28,910

Other feeder batches with open delivery windows. Each feeder keeps its own target batch.