2² × 3 × 13² × 109

Prime Factor Structure

Factorization String 2^2 × 3 × 13^2 × 109

Distinct Prime Factors 4

Square Status No

Abundance Measure Abundant

Analytical Properties

Total Divisors 36

Divisor Sum (σ) 563,640

Proper Divisor Sum 342,588

Digit Sum / Digital Root 12 (Root: 3)

Adjacent Primes #221047 ← → #221059

1 2 3 4 6 12 13 26 39 52 78 109 156 169 218 327 338 436 507 654 676 1,014 1,308 1,417 2,028 2,834 4,251 5,668 8,502 17,004 18,421 36,842 55,263 73,684 110,526 221,052

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

221,052 110,526 55,263 165,790 82,895 248,686 124,343 373,030 186,515 559,546 279,773 839,320 419,660 209,830 104,915 314,746 157,373 472,120 236,060 118,030 59,015 177,046 88,523 265,570 132,785 398,356 199,178 99,589 298,768 149,384 74,692 37,346 18,673 56,020 28,010 14,005 42,016 21,008 10,504 5,252 2,626 1,313 3,940 1,970 985 2,956 1,478 739 2,218 1,109 3,328 1,664 832 416 208 104 52 26 13 40

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