2 × 3² × 19 × 401

Prime Factor Structure

Factorization String 2 × 3^2 × 19 × 401

Distinct Prime Factors 4

Square Status No

Abundance Measure Abundant

Analytical Properties

Total Divisors 24

Divisor Sum (σ) 313,560

Proper Divisor Sum 176,418

Digit Sum / Digital Root 18 (Root: 9)

Adjacent Primes #137131 ← → #137143

1 2 3 6 9 18 19 38 57 114 171 342 401 802 1,203 2,406 3,609 7,218 7,619 15,238 22,857 45,714 68,571 137,142

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

137,142 68,571 205,714 102,857 308,572 154,286 77,143 231,430 115,715 347,146 173,573 520,720 260,360 130,180 65,090 32,545 97,636 48,818 24,409 73,228 36,614 18,307 54,922 27,461 82,384 41,192 20,596 10,298 5,149 15,448 7,724 3,862 1,931 5,794 2,897 8,692 4,346 2,173 6,520 3,260 1,630 815 2,446 1,223 3,670 1,835 5,506 2,753 8,260 4,130 2,065 6,196 3,098 1,549 4,648 2,324 1,162 581 1,744 872

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