2² × 5 × 19991

Prime Factor Structure

Factorization String 2^2 × 5 × 19991

Distinct Prime Factors 3

Square Status No

Abundance Measure Abundant

Analytical Properties

Total Divisors 12

Divisor Sum (σ) 839,664

Proper Divisor Sum 439,844

Digit Sum / Digital Root 31 (Root: 4)

Adjacent Primes #399793 ← → #399851

1 2 4 5 10 20 19,991 39,982 79,964 99,955 199,910 399,820

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

399,820 199,910 99,955 299,866 149,933 449,800 224,900 112,450 56,225 168,676 84,338 42,169 126,508 63,254 31,627 94,882 47,441 142,324 71,162 35,581 106,744 53,372 26,686 13,343 40,030 20,015 60,046 30,023 90,070 45,035 135,106 67,553 202,660 101,330 50,665 151,996 75,998 37,999 113,998 56,999 170,998 85,499 256,498 128,249 384,748 192,374 96,187 288,562 144,281 432,844 216,422 108,211 324,634 162,317 486,952 243,476 121,738 60,869 182,608 91,304

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