2² × 5 × 17 × 61

Prime Factor Structure

Factorization String 2^2 × 5 × 17 × 61

Distinct Prime Factors 4

Square Status No

Abundance Measure Abundant

Analytical Properties

Total Divisors 24

Divisor Sum (σ) 46,872

Proper Divisor Sum 26,132

Digit Sum / Digital Root 13 (Root: 4)

Adjacent Primes #20731 ← → #20743

1 2 4 5 10 17 20 34 61 68 85 122 170 244 305 340 610 1,037 1,220 2,074 4,148 5,185 10,370 20,740

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

20,740 10,370 5,185 15,556 7,778 3,889 11,668 5,834 2,917 8,752 4,376 2,188 1,094 547 1,642 821 2,464 1,232 616 308 154 77 232 116 58 29 88 44 22 11 34 17 52 26 13 40 20 10 5 16 8 4 2 1

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