2 × 5² × 431

Prime Factor Structure

Factorization String 2 × 5^2 × 431

Distinct Prime Factors 3

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 12

Divisor Sum (σ) 40,176

Proper Divisor Sum 18,626

Digit Sum / Digital Root 13 (Root: 4)

Adjacent Primes #21529 ← → #21557

1 2 5 10 25 50 431 862 2,155 4,310 10,775 21,550

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

21,550 10,775 32,326 16,163 48,490 24,245 72,736 36,368 18,184 9,092 4,546 2,273 6,820 3,410 1,705 5,116 2,558 1,279 3,838 1,919 5,758 2,879 8,638 4,319 12,958 6,479 19,438 9,719 29,158 14,579 43,738 21,869 65,608 32,804 16,402 8,201 24,604 12,302 6,151 18,454 9,227 27,682 13,841 41,524 20,762 10,381 31,144 15,572 7,786 3,893 11,680 5,840 2,920 1,460 730 365 1,096 548 274 137

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