2 × 5 × 13³

Prime Factor Structure

Factorization String 2 × 5 × 13^3

Distinct Prime Factors 3

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 16

Divisor Sum (σ) 42,840

Proper Divisor Sum 20,870

Digit Sum / Digital Root 19 (Root: 1)

Adjacent Primes #21961 ← → #21977

1 2 5 10 13 26 65 130 169 338 845 1,690 2,197 4,394 10,985 21,970

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

21,970 10,985 32,956 16,478 8,239 24,718 12,359 37,078 18,539 55,618 27,809 83,428 41,714 20,857 62,572 31,286 15,643 46,930 23,465 70,396 35,198 17,599 52,798 26,399 79,198 39,599 118,798 59,399 178,198 89,099 267,298 133,649 400,948 200,474 100,237 300,712 150,356 75,178 37,589 112,768 56,384 28,192 14,096 7,048 3,524 1,762 881 2,644 1,322 661 1,984 992 496 248 124 62 31 94 47 142

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