2² × 3 × 13 × 1381

Prime Factor Structure

Factorization String 2^2 × 3 × 13 × 1381

Distinct Prime Factors 4

Square Status No

Abundance Measure Abundant

Analytical Properties

Total Divisors 24

Divisor Sum (σ) 541,744

Proper Divisor Sum 326,308

Digit Sum / Digital Root 21 (Root: 3)

Adjacent Primes #215417 ← → #215443

1 2 3 4 6 12 13 26 39 52 78 156 1,381 2,762 4,143 5,524 8,286 16,572 17,953 35,906 53,859 71,812 107,718 215,436

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

215,436 107,718 53,859 161,578 80,789 242,368 121,184 60,592 30,296 15,148 7,574 3,787 11,362 5,681 17,044 8,522 4,261 12,784 6,392 3,196 1,598 799 2,398 1,199 3,598 1,799 5,398 2,699 8,098 4,049 12,148 6,074 3,037 9,112 4,556 2,278 1,139 3,418 1,709 5,128 2,564 1,282 641 1,924 962 481 1,444 722 361 1,084 542 271 814 407 1,222 611 1,834 917 2,752 1,376

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