2 × 3² × 31 × 37

Prime Factor Structure

Factorization String 2 × 3^2 × 31 × 37

Distinct Prime Factors 4

Square Status No

Abundance Measure Abundant

Analytical Properties

Total Divisors 24

Divisor Sum (σ) 47,424

Proper Divisor Sum 26,778

Digit Sum / Digital Root 18 (Root: 9)

Adjacent Primes #20641 ← → #20663

1 2 3 6 9 18 31 37 62 74 93 111 186 222 279 333 558 666 1,147 2,294 3,441 6,882 10,323 20,646

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

20,646 10,323 30,970 15,485 46,456 23,228 11,614 5,807 17,422 8,711 26,134 13,067 39,202 19,601 58,804 29,402 14,701 44,104 22,052 11,026 5,513 16,540 8,270 4,135 12,406 6,203 18,610 9,305 27,916 13,958 6,979 20,938 10,469 31,408 15,704 7,852 3,926 1,963 5,890 2,945 8,836 4,418 2,209 6,628 3,314 1,657 4,972 2,486 1,243 3,730 1,865 5,596 2,798 1,399 4,198 2,099 6,298 3,149 9,448 4,724

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