2 × 13 × 37 × 21881

Prime Factor Structure

Factorization String 2 × 13 × 37 × 21881

Distinct Prime Factors 4

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 16

Divisor Sum (σ) 34,923,672

Proper Divisor Sum 13,874,150

Digit Sum / Digital Root 25 (Root: 7)

Adjacent Primes #21049517 ← → #21049541

1 2 13 26 37 74 481 962 21,881 43,762 284,453 568,906 809,597 1,619,194 10,524,761 21,049,522

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

21,049,522 10,524,761 31,574,284 15,787,142 7,893,571 23,680,714 11,840,357 35,521,072 17,760,536 8,880,268 4,440,134 2,220,067 6,660,202 3,330,101 9,990,304 4,995,152 2,497,576 1,248,788 624,394 312,197 936,592 468,296 234,148 117,074 58,537 175,612 87,806 43,903 131,710 65,855 197,566 98,783 296,350 148,175 444,526 222,263 666,790 333,395 1,000,186 500,093 1,500,280 750,140 375,070 187,535 562,606 281,303 843,910 421,955 1,265,866 632,933 1,898,800 949,400 474,700 237,350 118,675 356,026 178,013 534,040 267,020 133,510

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