2² × 5 × 13 × 313

Prime Factor Structure

Factorization String 2^2 × 5 × 13 × 313

Distinct Prime Factors 4

Square Status No

Abundance Measure Abundant

Analytical Properties

Total Divisors 24

Divisor Sum (σ) 184,632

Proper Divisor Sum 103,252

Digit Sum / Digital Root 20 (Root: 2)

Adjacent Primes #81373 ← → #81401

1 2 4 5 10 13 20 26 52 65 130 260 313 626 1,252 1,565 3,130 4,069 6,260 8,138 16,276 20,345 40,690 81,380

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

81,380 40,690 20,345 61,036 30,518 15,259 45,778 22,889 68,668 34,334 17,167 51,502 25,751 77,254 38,627 115,882 57,941 173,824 86,912 43,456 21,728 10,864 5,432 2,716 1,358 679 2,038 1,019 3,058 1,529 4,588 2,294 1,147 3,442 1,721 5,164 2,582 1,291 3,874 1,937 5,812 2,906 1,453 4,360 2,180 1,090 545 1,636 818 409 1,228 614 307 922 461 1,384 692 346 173 520

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