2² × 3 × 43 × 421

Prime Factor Structure

Factorization String 2^2 × 3 × 43 × 421

Distinct Prime Factors 4

Square Status No

Abundance Measure Abundant

Analytical Properties

Total Divisors 24

Divisor Sum (σ) 519,904

Proper Divisor Sum 302,668

Digit Sum / Digital Root 21 (Root: 3)

Adjacent Primes #217229 ← → #217241

1 2 3 4 6 12 43 86 129 172 258 421 516 842 1,263 1,684 2,526 5,052 18,103 36,206 54,309 72,412 108,618 217,236

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

217,236 108,618 54,309 162,928 81,464 40,732 20,366 10,183 30,550 15,275 45,826 22,913 68,740 34,370 17,185 51,556 25,778 12,889 38,668 19,334 9,667 29,002 14,501 43,504 21,752 10,876 5,438 2,719 8,158 4,079 12,238 6,119 18,358 9,179 27,538 13,769 41,308 20,654 10,327 30,982 15,491 46,474 23,237 69,712 34,856 17,428 8,714 4,357 13,072 6,536 3,268 1,634 817 2,452 1,226 613 1,840 920 460 230

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