2² × 5 × 31 × 647

Prime Factor Structure

Factorization String 2^2 × 5 × 31 × 647

Distinct Prime Factors 4

Square Status No

Abundance Measure Abundant

Analytical Properties

Total Divisors 24

Divisor Sum (σ) 870,912

Proper Divisor Sum 469,772

Digit Sum / Digital Root 10 (Root: 1)

Adjacent Primes #401119 ← → #401161

1 2 4 5 10 20 31 62 124 155 310 620 647 1,294 2,588 3,235 6,470 12,940 20,057 40,114 80,228 100,285 200,570 401,140

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

401,140 200,570 100,285 300,856 150,428 75,214 37,607 112,822 56,411 169,234 84,617 253,852 126,926 63,463 190,390 95,195 285,586 142,793 428,380 214,190 107,095 321,286 160,643 481,930 240,965 722,896 361,448 180,724 90,362 45,181 135,544 67,772 33,886 16,943 50,830 25,415 76,246 38,123 114,370 57,185 171,556 85,778 42,889 128,668 64,334 32,167 96,502 48,251 144,754 72,377 217,132 108,566 54,283 162,850 81,425 244,276 122,138 61,069 183,208 91,604

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