2² × 5 × 7 × 43 × 109

Prime Factor Structure

Factorization String 2^2 × 5 × 7 × 43 × 109

Distinct Prime Factors 5

Square Status No

Abundance Measure Abundant

Analytical Properties

Total Divisors 48

Divisor Sum (σ) 1,626,240

Proper Divisor Sum 970,060

Digit Sum / Digital Root 26 (Root: 8)

Adjacent Primes #656171 ← → #656221

1 2 4 5 7 10 14 20 28 35 43 70 86 109 140 172 215 218 301 430 436 545 602 763 860 1,090 1,204 1,505 1,526 2,180 3,010 3,052 3,815 4,687 6,020 7,630 9,374 15,260 18,748 23,435 32,809 46,870 65,618 93,740 131,236 164,045 328,090 656,180

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

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