2² × 5 × 11 × 19 × 31

Prime Factor Structure

Factorization String 2^2 × 5 × 11 × 19 × 31

Distinct Prime Factors 5

Square Status No

Abundance Measure Abundant

Analytical Properties

Total Divisors 48

Divisor Sum (σ) 322,560

Proper Divisor Sum 192,980

Digit Sum / Digital Root 25 (Root: 7)

Adjacent Primes #129553 ← → #129581

1 2 4 5 10 11 19 20 22 31 38 44 55 62 76 95 110 124 155 190 209 220 310 341 380 418 589 620 682 836 1,045 1,178 1,364 1,705 2,090 2,356 2,945 3,410 4,180 5,890 6,479 6,820 11,780 12,958 25,916 32,395 64,790 129,580

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

129,580 64,790 32,395 97,186 48,593 145,780 72,890 36,445 109,336 54,668 27,334 13,667 41,002 20,501 61,504 30,752 15,376 7,688 3,844 1,922 961 2,884 1,442 721 2,164 1,082 541 1,624 812 406 203 610 305 916 458 229 688 344 172 86 43 130 65 196 98 49 148 74 37 112 56 28 14 7 22 11 34 17 52 26

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