2 × 3 × 7 × 503

Prime Factor Structure

Factorization String 2 × 3 × 7 × 503

Distinct Prime Factors 4

Square Status No

Abundance Measure Abundant

Analytical Properties

Total Divisors 16

Divisor Sum (σ) 48,384

Proper Divisor Sum 27,258

Digit Sum / Digital Root 12 (Root: 3)

Adjacent Primes #21121 ← → #21139

1 2 3 6 7 14 21 42 503 1,006 1,509 3,018 3,521 7,042 10,563 21,126

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

21,126 10,563 31,690 15,845 47,536 23,768 11,884 5,942 2,971 8,914 4,457 13,372 6,686 3,343 10,030 5,015 15,046 7,523 22,570 11,285 33,856 16,928 8,464 4,232 2,116 1,058 529 1,588 794 397 1,192 596 298 149 448 224 112 56 28 14 7 22 11 34 17 52 26 13 40 20 10 5 16 8 4 2 1

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