3⁴ × 7 × 37

Prime Factor Structure

Factorization String 3^4 × 7 × 37

Distinct Prime Factors 3

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 20

Divisor Sum (σ) 36,784

Proper Divisor Sum 15,805

Digit Sum / Digital Root 27 (Root: 9)

Adjacent Primes #20963 ← → #20981

1 3 7 9 21 27 37 63 81 111 189 259 333 567 777 999 2,331 2,997 6,993 20,979

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

20,979 62,938 31,469 94,408 47,204 23,602 11,801 35,404 17,702 8,851 26,554 13,277 39,832 19,916 9,958 4,979 14,938 7,469 22,408 11,204 5,602 2,801 8,404 4,202 2,101 6,304 3,152 1,576 788 394 197 592 296 148 74 37 112 56 28 14 7 22 11 34 17 52 26 13 40 20 10 5 16 8 4 2 1

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