2² × 5 × 71 × 139

Prime Factor Structure

Factorization String 2^2 × 5 × 71 × 139

Distinct Prime Factors 4

Square Status No

Abundance Measure Abundant

Analytical Properties

Total Divisors 24

Divisor Sum (σ) 423,360

Proper Divisor Sum 225,980

Digit Sum / Digital Root 28 (Root: 1)

Adjacent Primes #197371 ← → #197381

1 2 4 5 10 20 71 139 142 278 284 355 556 695 710 1,390 1,420 2,780 9,869 19,738 39,476 49,345 98,690 197,380

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

197,380 98,690 49,345 148,036 74,018 37,009 111,028 55,514 27,757 83,272 41,636 20,818 10,409 31,228 15,614 7,807 23,422 11,711 35,134 17,567 52,702 26,351 79,054 39,527 118,582 59,291 177,874 88,937 266,812 133,406 66,703 200,110 100,055 300,166 150,083 450,250 225,125 675,376 337,688 168,844 84,422 42,211 126,634 63,317 189,952 94,976 47,488 23,744 11,872 5,936 2,968 1,484 742 371 1,114 557 1,672 836 418 209

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