2² × 7 × 11 × 1291

Prime Factor Structure

Factorization String 2^2 × 7 × 11 × 1291

Distinct Prime Factors 4

Square Status No

Abundance Measure Abundant

Analytical Properties

Total Divisors 24

Divisor Sum (σ) 868,224

Proper Divisor Sum 470,596

Digit Sum / Digital Root 35 (Root: 8)

Adjacent Primes #397597 ← → #397633

1 2 4 7 11 14 22 28 44 77 154 308 1,291 2,582 5,164 9,037 14,201 18,074 28,402 36,148 56,804 99,407 198,814 397,628

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

397,628 198,814 99,407 298,222 149,111 447,334 223,667 671,002 335,501 1,006,504 503,252 251,626 125,813 377,440 188,720 94,360 47,180 23,590 11,795 35,386 17,693 53,080 26,540 13,270 6,635 19,906 9,953 29,860 14,930 7,465 22,396 11,198 5,599 16,798 8,399 25,198 12,599 37,798 18,899 56,698 28,349 85,048 42,524 21,262 10,631 31,894 15,947 47,842 23,921 71,764 35,882 17,941 53,824 26,912 13,456 6,728 3,364 1,682 841 2,524

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