218,440

2³ × 5 × 43 × 127

Prime Factor Structure

Factorization String 2^3 × 5 × 43 × 127

Distinct Prime Factors 4

Square Status No

Abundance Measure Abundant

Total Divisors 32

Divisor Sum (σ) 506,880

Proper Divisor Sum 288,440

Digit Sum / Digital Root 19 (Root: 1)

Adjacent Primes #218437 ← → #218447

1 2 4 5 8 10 20 40 43 86 127 172 215 254 344 430 508 635 860 1,016 1,270 1,720 2,540 5,080 5,461 10,922 21,844 27,305 43,688 54,610 109,220 218,440

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

218,440 109,220 54,610 27,305 81,916 40,958 20,479 61,438 30,719 92,158 46,079 138,238 69,119 207,358 103,679 311,038 155,519 466,558 233,279 699,838 349,919 1,049,758 524,879 1,574,638 787,319 2,361,958 1,180,979 3,542,938 1,771,469 5,314,408 2,657,204 1,328,602 664,301 1,992,904 996,452 498,226 249,113 747,340 373,670 186,835 560,506 280,253 840,760 420,380 210,190 105,095 315,286 157,643 472,930 236,465 709,396 354,698 177,349 532,048 266,024 133,012 66,506 33,253 99,760 49,880

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