3 × 17 × 19 × 21143

Prime Factor Structure

Factorization String 3 × 17 × 19 × 21143

Distinct Prime Factors 4

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 16

Divisor Sum (σ) 30,447,360

Proper Divisor Sum 9,959,793

Digit Sum / Digital Root 39 (Root: 3)

Adjacent Primes #20487563 ← → #20487569

1 3 17 19 51 57 323 969 21,143 63,429 359,431 401,717 1,078,293 1,205,151 6,829,189 20,487,567

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

20,487,567 61,462,702 30,731,351 92,194,054 46,097,027 138,291,082 69,145,541 207,436,624 103,718,312 51,859,156 25,929,578 12,964,789 38,894,368 19,447,184 9,723,592 4,861,796 2,430,898 1,215,449 3,646,348 1,823,174 911,587 2,734,762 1,367,381 4,102,144 2,051,072 1,025,536 512,768 256,384 128,192 64,096 32,048 16,024 8,012 4,006 2,003 6,010 3,005 9,016 4,508 2,254 1,127 3,382 1,691 5,074 2,537 7,612 3,806 1,903 5,710 2,855 8,566 4,283 12,850 6,425 19,276 9,638 4,819 14,458 7,229 21,688

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