257,946

2 × 3 × 13 × 3307

Prime Factor Structure

Factorization String 2 × 3 × 13 × 3307

Distinct Prime Factors 4

Square Status No

Abundance Measure Abundant

Total Divisors 16

Divisor Sum (σ) 555,744

Proper Divisor Sum 297,798

Digit Sum / Digital Root 33 (Root: 6)

Adjacent Primes #257921 ← → #257947

1 2 3 6 13 26 39 78 3,307 6,614 9,921 19,842 42,991 85,982 128,973 257,946

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

257,946 128,973 386,920 193,460 96,730 48,365 145,096 72,548 36,274 18,137 54,412 27,206 13,603 40,810 20,405 61,216 30,608 15,304 7,652 3,826 1,913 5,740 2,870 1,435 4,306 2,153 6,460 3,230 1,615 4,846 2,423 7,270 3,635 10,906 5,453 16,360 8,180 4,090 2,045 6,136 3,068 1,534 767 2,302 1,151 3,454 1,727 5,182 2,591 7,774 3,887 11,662 5,831 17,494 8,747 26,242 13,121 39,364 19,682 9,841

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