2² × 5 × 997

Prime Factor Structure

Factorization String 2^2 × 5 × 997

Distinct Prime Factors 3

Square Status No

Abundance Measure Abundant

Analytical Properties

Total Divisors 12

Divisor Sum (σ) 41,916

Proper Divisor Sum 21,976

Digit Sum / Digital Root 23 (Root: 5)

Adjacent Primes #19937 ← → #19949

1 2 4 5 10 20 997 1,994 3,988 4,985 9,970 19,940

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

19,940 9,970 4,985 14,956 7,478 3,739 11,218 5,609 16,828 8,414 4,207 12,622 6,311 18,934 9,467 28,402 14,201 42,604 21,302 10,651 31,954 15,977 47,932 23,966 11,983 35,950 17,975 53,926 26,963 80,890 40,445 121,336 60,668 30,334 15,167 45,502 22,751 68,254 34,127 102,382 51,191 153,574 76,787 230,362 115,181 345,544 172,772 86,386 43,193 129,580 64,790 32,395 97,186 48,593 145,780 72,890 36,445 109,336 54,668 27,334

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