2² × 5 × 13 × 829

Prime Factor Structure

Factorization String 2^2 × 5 × 13 × 829

Distinct Prime Factors 4

Square Status No

Abundance Measure Abundant

Analytical Properties

Total Divisors 24

Divisor Sum (σ) 488,040

Proper Divisor Sum 272,500

Digit Sum / Digital Root 17 (Root: 8)

Adjacent Primes #215531 ← → #215563

1 2 4 5 10 13 20 26 52 65 130 260 829 1,658 3,316 4,145 8,290 10,777 16,580 21,554 43,108 53,885 107,770 215,540

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

215,540 107,770 53,885 161,656 80,828 40,414 20,207 60,622 30,311 90,934 45,467 136,402 68,201 204,604 102,302 51,151 153,454 76,727 230,182 115,091 345,274 172,637 517,912 258,956 129,478 64,739 194,218 97,109 291,328 145,664 72,832 36,416 18,208 9,104 4,552 2,276 1,138 569 1,708 854 427 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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