2² × 3 × 5 × 7 × 521

Prime Factor Structure

Factorization String 2^2 × 3 × 5 × 7 × 521

Distinct Prime Factors 5

Square Status No

Abundance Measure Abundant

Analytical Properties

Total Divisors 48

Divisor Sum (σ) 701,568

Proper Divisor Sum 482,748

Digit Sum / Digital Root 21 (Root: 3)

Adjacent Primes #218819 ← → #218833

1 2 3 4 5 6 7 10 12 14 15 20 21 28 30 35 42 60 70 84 105 140 210 420 521 1,042 1,563 2,084 2,605 3,126 3,647 5,210 6,252 7,294 7,815 10,420 10,941 14,588 15,630 18,235 21,882 31,260 36,470 43,764 54,705 72,940 109,410 218,820

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

218,820 109,410 54,705 164,116 82,058 41,029 123,088 61,544 30,772 15,386 7,693 23,080 11,540 5,770 2,885 8,656 4,328 2,164 1,082 541 1,624 812 406 203 610 305 916 458 229 688 344 172 86 43 130 65 196 98 49 148 74 37 112 56 28 14 7 22 11 34 17 52 26 13 40 20 10 5 16 8

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