2² × 3 × 5 × 19 × 137²

Prime Factor Structure

Factorization String 2^2 × 3 × 5 × 19 × 137^2

Distinct Prime Factors 5

Square Status No

Abundance Measure Abundant

Analytical Properties

Total Divisors 72

Divisor Sum (σ) 63,527,520

Proper Divisor Sum 42,130,860

Digit Sum / Digital Root 33 (Root: 6)

Adjacent Primes #21396649 ← → #21396667

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

21,396,660 10,698,330 5,349,165 16,047,496 8,023,748 4,011,874 2,005,937 6,017,812 3,008,906 1,504,453 4,513,360 2,256,680 1,128,340 564,170 282,085 846,256 423,128 211,564 105,782 52,891 158,674 79,337 238,012 119,006 59,503 178,510 89,255 267,766 133,883 401,650 200,825 602,476 301,238 150,619 451,858 225,929 677,788 338,894 169,447 508,342 254,171 762,514 381,257 1,143,772 571,886 285,943 857,830 428,915 1,286,746 643,373 1,930,120 965,060 482,530 241,265 723,796 361,898 180,949 542,848 271,424 135,712

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