3³ × 11 × 73

Prime Factor Structure

Factorization String 3^3 × 11 × 73

Distinct Prime Factors 3

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 16

Divisor Sum (σ) 35,520

Proper Divisor Sum 13,839

Digit Sum / Digital Root 18 (Root: 9)

Adjacent Primes #21673 ← → #21683

1 3 9 11 27 33 73 99 219 297 657 803 1,971 2,409 7,227 21,681

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

21,681 65,044 32,522 16,261 48,784 24,392 12,196 6,098 3,049 9,148 4,574 2,287 6,862 3,431 10,294 5,147 15,442 7,721 23,164 11,582 5,791 17,374 8,687 26,062 13,031 39,094 19,547 58,642 29,321 87,964 43,982 21,991 65,974 32,987 98,962 49,481 148,444 74,222 37,111 111,334 55,667 167,002 83,501 250,504 125,252 62,626 31,313 93,940 46,970 23,485 70,456 35,228 17,614 8,807 26,422 13,211 39,634 19,817 59,452 29,726

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