2 × 3² × 19 × 821

Prime Factor Structure

Factorization String 2 × 3^2 × 19 × 821

Distinct Prime Factors 4

Square Status No

Abundance Measure Abundant

Analytical Properties

Total Divisors 24

Divisor Sum (σ) 641,160

Proper Divisor Sum 360,378

Digit Sum / Digital Root 27 (Root: 9)

Adjacent Primes #280771 ← → #280811

1 2 3 6 9 18 19 38 57 114 171 342 821 1,642 2,463 4,926 7,389 14,778 15,599 31,198 46,797 93,594 140,391 280,782

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

280,782 140,391 421,174 210,587 631,762 315,881 947,644 473,822 236,911 710,734 355,367 1,066,102 533,051 1,599,154 799,577 2,398,732 1,199,366 599,683 1,799,050 899,525 2,698,576 1,349,288 674,644 337,322 168,661 505,984 252,992 126,496 63,248 31,624 15,812 7,906 3,953 11,860 5,930 2,965 8,896 4,448 2,224 1,112 556 278 139 418 209 628 314 157 472 236 118 59 178 89 268 134 67 202 101 304

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