2 × 5² × 13 × 31

Prime Factor Structure

Factorization String 2 × 5^2 × 13 × 31

Distinct Prime Factors 4

Square Status No

Abundance Measure Abundant

Analytical Properties

Total Divisors 24

Divisor Sum (σ) 41,664

Proper Divisor Sum 21,514

Digit Sum / Digital Root 8 (Root: 8)

Adjacent Primes #20149 ← → #20161

1 2 5 10 13 25 26 31 50 62 65 130 155 310 325 403 650 775 806 1,550 2,015 4,030 10,075 20,150

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

20,150 10,075 30,226 15,113 45,340 22,670 11,335 34,006 17,003 51,010 25,505 76,516 38,258 19,129 57,388 28,694 14,347 43,042 21,521 64,564 32,282 16,141 48,424 24,212 12,106 6,053 18,160 9,080 4,540 2,270 1,135 3,406 1,703 5,110 2,555 7,666 3,833 11,500 5,750 2,875 8,626 4,313 12,940 6,470 3,235 9,706 4,853 14,560 7,280 3,640 1,820 910 455 1,366 683 2,050 1,025 3,076 1,538 769

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