3 × 7 × 37 × 107 × 263

Prime Factor Structure

Factorization String 3 × 7 × 37 × 107 × 263

Distinct Prime Factors 5

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 32

Divisor Sum (σ) 34,670,592

Proper Divisor Sum 12,805,035

Digit Sum / Digital Root 39 (Root: 3)

Adjacent Primes #21865537 ← → #21865559

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

21,865,557 65,596,672 32,798,336 16,399,168 8,199,584 4,099,792 2,049,896 1,024,948 512,474 256,237 768,712 384,356 192,178 96,089 288,268 144,134 72,067 216,202 108,101 324,304 162,152 81,076 40,538 20,269 60,808 30,404 15,202 7,601 22,804 11,402 5,701 17,104 8,552 4,276 2,138 1,069 3,208 1,604 802 401 1,204 602 301 904 452 226 113 340 170 85 256 128 64 32 16 8 4 2 1

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