2⁴ × 5 × 257

Prime Factor Structure

Factorization String 2^4 × 5 × 257

Distinct Prime Factors 3

Square Status No

Abundance Measure Abundant

Analytical Properties

Total Divisors 20

Divisor Sum (σ) 47,988

Proper Divisor Sum 27,428

Digit Sum / Digital Root 13 (Root: 4)

Adjacent Primes #20551 ← → #20563

1 2 4 5 8 10 16 20 40 80 257 514 1,028 1,285 2,056 2,570 4,112 5,140 10,280 20,560

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

20,560 10,280 5,140 2,570 1,285 3,856 1,928 964 482 241 724 362 181 544 272 136 68 34 17 52 26 13 40 20 10 5 16 8 4 2 1

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