2² × 5 × 13 × 647

Prime Factor Structure

Factorization String 2^2 × 5 × 13 × 647

Distinct Prime Factors 4

Square Status No

Abundance Measure Abundant

Analytical Properties

Total Divisors 24

Divisor Sum (σ) 381,024

Proper Divisor Sum 212,804

Digit Sum / Digital Root 19 (Root: 1)

Adjacent Primes #168211 ← → #168227

1 2 4 5 10 13 20 26 52 65 130 260 647 1,294 2,588 3,235 6,470 8,411 12,940 16,822 33,644 42,055 84,110 168,220

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

168,220 84,110 42,055 126,166 63,083 189,250 94,625 283,876 141,938 70,969 212,908 106,454 53,227 159,682 79,841 239,524 119,762 59,881 179,644 89,822 44,911 134,734 67,367 202,102 101,051 303,154 151,577 454,732 227,366 113,683 341,050 170,525 511,576 255,788 127,894 63,947 191,842 95,921 287,764 143,882 71,941 215,824 107,912 53,956 26,978 13,489 40,468 20,234 10,117 30,352 15,176 7,588 3,794 1,897 5,692 2,846 1,423 4,270 2,135 6,406

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