21,873

3 × 23 × 317

Prime Factor Structure

Factorization String 3 × 23 × 317

Distinct Prime Factors 3

Square Status No

Abundance Measure Deficient

Total Divisors 8

Divisor Sum (σ) 30,528

Proper Divisor Sum 8,655

Digit Sum / Digital Root 21 (Root: 3)

Adjacent Primes #21871 ← → #21881

1 3 23 69 317 951 7,291 21,873

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

21,873 65,620 32,810 16,405 49,216 24,608 12,304 6,152 3,076 1,538 769 2,308 1,154 577 1,732 866 433 1,300 650 325 976 488 244 122 61 184 92 46 23 70 35 106 53 160 80 40 20 10 5 16 8 4 2 1

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