2² × 13² × 17 × 19

Prime Factor Structure

Factorization String 2^2 × 13^2 × 17 × 19

Distinct Prime Factors 4

Square Status No

Abundance Measure Abundant

Analytical Properties

Total Divisors 36

Divisor Sum (σ) 461,160

Proper Divisor Sum 242,812

Digit Sum / Digital Root 26 (Root: 8)

Adjacent Primes #218287 ← → #218357

1 2 4 13 17 19 26 34 38 52 68 76 169 221 247 323 338 442 494 646 676 884 988 1,292 2,873 3,211 4,199 5,746 6,422 8,398 11,492 12,844 16,796 54,587 109,174 218,348

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

218,348 109,174 54,587 163,762 81,881 245,644 122,822 61,411 184,234 92,117 276,352 138,176 69,088 34,544 17,272 8,636 4,318 2,159 6,478 3,239 9,718 4,859 14,578 7,289 21,868 10,934 5,467 16,402 8,201 24,604 12,302 6,151 18,454 9,227 27,682 13,841 41,524 20,762 10,381 31,144 15,572 7,786 3,893 11,680 5,840 2,920 1,460 730 365 1,096 548 274 137 412 206 103 310 155 466 233

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