2³ × 5 × 13 × 421

Prime Factor Structure

Factorization String 2^3 × 5 × 13 × 421

Distinct Prime Factors 4

Square Status No

Abundance Measure Abundant

Analytical Properties

Total Divisors 32

Divisor Sum (σ) 531,720

Proper Divisor Sum 312,800

Digit Sum / Digital Root 22 (Root: 4)

Adjacent Primes #218887 ← → #218923

1 2 4 5 8 10 13 20 26 40 52 65 104 130 260 421 520 842 1,684 2,105 3,368 4,210 5,473 8,420 10,946 16,840 21,892 27,365 43,784 54,730 109,460 218,920

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

218,920 109,460 54,730 27,365 82,096 41,048 20,524 10,262 5,131 15,394 7,697 23,092 11,546 5,773 17,320 8,660 4,330 2,165 6,496 3,248 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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