2² × 5 × 71²

Prime Factor Structure

Factorization String 2^2 × 5 × 71^2

Distinct Prime Factors 3

Square Status No

Abundance Measure Abundant

Analytical Properties

Total Divisors 18

Divisor Sum (σ) 214,746

Proper Divisor Sum 113,926

Digit Sum / Digital Root 11 (Root: 2)

Adjacent Primes #100811 ← → #100823

1 2 4 5 10 20 71 142 284 355 710 1,420 5,041 10,082 20,164 25,205 50,410 100,820

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

100,820 50,410 25,205 75,616 37,808 18,904 9,452 4,726 2,363 7,090 3,545 10,636 5,318 2,659 7,978 3,989 11,968 5,984 2,992 1,496 748 374 187 562 281 844 422 211 634 317 952 476 238 119 358 179 538 269 808 404 202 101 304 152 76 38 19 58 29 88 44 22 11 34 17 52 26 13 40 20

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