2 × 3² × 17 × 691

Prime Factor Structure

Factorization String 2 × 3^2 × 17 × 691

Distinct Prime Factors 4

Square Status No

Abundance Measure Abundant

Analytical Properties

Total Divisors 24

Divisor Sum (σ) 485,784

Proper Divisor Sum 274,338

Digit Sum / Digital Root 18 (Root: 9)

Adjacent Primes #211441 ← → #211457

1 2 3 6 9 17 18 34 51 102 153 306 691 1,382 2,073 4,146 6,219 11,747 12,438 23,494 35,241 70,482 105,723 211,446

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

211,446 105,723 317,170 158,585 475,756 237,878 118,939 356,818 178,409 535,228 267,614 133,807 401,422 200,711 602,134 301,067 903,202 451,601 1,354,804 677,402 338,701 1,016,104 508,052 254,026 127,013 381,040 190,520 95,260 47,630 23,815 71,446 35,723 107,170 53,585 160,756 80,378 40,189 120,568 60,284 30,142 15,071 45,214 22,607 67,822 33,911 101,734 50,867 152,602 76,301 228,904 114,452 57,226 28,613 85,840 42,920 21,460 10,730 5,365 16,096 8,048

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