5 × 31 × 163 × 809

Prime Factor Structure

Factorization String 5 × 31 × 163 × 809

Distinct Prime Factors 4

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 16

Divisor Sum (σ) 25,505,280

Proper Divisor Sum 5,065,895

Digit Sum / Digital Root 34 (Root: 7)

Adjacent Primes #20439379 ← → #20439439

1 5 31 155 163 809 815 4,045 5,053 25,079 25,265 125,395 131,867 659,335 4,087,877 20,439,385

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

20,439,385 61,318,156 30,659,078 15,329,539 45,988,618 22,994,309 68,982,928 34,491,464 17,245,732 8,622,866 4,311,433 12,934,300 6,467,150 3,233,575 9,700,726 4,850,363 14,551,090 7,275,545 21,826,636 10,913,318 5,456,659 16,369,978 8,184,989 24,554,968 12,277,484 6,138,742 3,069,371 9,208,114 4,604,057 13,812,172 6,906,086 3,453,043 10,359,130 5,179,565 15,538,696 7,769,348 3,884,674 1,942,337 5,827,012 2,913,506 1,456,753 4,370,260 2,185,130 1,092,565 3,277,696 1,638,848 819,424 409,712 204,856 102,428 51,214 25,607 76,822 38,411 115,234 57,617 172,852 86,426 43,213 129,640

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