2 × 7 × 17³ × 311

Prime Factor Structure

Factorization String 2 × 7 × 17^3 × 311

Distinct Prime Factors 4

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 32

Divisor Sum (σ) 39,087,360

Proper Divisor Sum 17,696,158

Digit Sum / Digital Root 20 (Root: 2)

Adjacent Primes #21391193 ← → #21391211

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

21,391,202 10,695,601 32,086,804 16,043,402 8,021,701 24,065,104 12,032,552 6,016,276 3,008,138 1,504,069 4,512,208 2,256,104 1,128,052 564,026 282,013 846,040 423,020 211,510 105,755 317,266 158,633 475,900 237,950 118,975 356,926 178,463 535,390 267,695 803,086 401,543 1,204,630 602,315 1,806,946 903,473 2,710,420 1,355,210 677,605 2,032,816 1,016,408 508,204 254,102 127,051 381,154 190,577 571,732 285,866 142,933 428,800 214,400 107,200 53,600 26,800 13,400 6,700 3,350 1,675 5,026 2,513 7,540 3,770

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