2² × 5 × 20431

Prime Factor Structure

Factorization String 2^2 × 5 × 20431

Distinct Prime Factors 3

Square Status No

Abundance Measure Abundant

Analytical Properties

Total Divisors 12

Divisor Sum (σ) 858,144

Proper Divisor Sum 449,524

Digit Sum / Digital Root 20 (Root: 2)

Adjacent Primes #408607 ← → #408623

1 2 4 5 10 20 20,431 40,862 81,724 102,155 204,310 408,620

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

408,620 204,310 102,155 306,466 153,233 459,700 229,850 114,925 344,776 172,388 86,194 43,097 129,292 64,646 32,323 96,970 48,485 145,456 72,728 36,364 18,182 9,091 27,274 13,637 40,912 20,456 10,228 5,114 2,557 7,672 3,836 1,918 959 2,878 1,439 4,318 2,159 6,478 3,239 9,718 4,859 14,578 7,289 21,868 10,934 5,467 16,402 8,201 24,604 12,302 6,151 18,454 9,227 27,682 13,841 41,524 20,762 10,381 31,144 15,572

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