2² × 5 × 13 × 839

Prime Factor Structure

Factorization String 2^2 × 5 × 13 × 839

Distinct Prime Factors 4

Square Status No

Abundance Measure Abundant

Analytical Properties

Total Divisors 24

Divisor Sum (σ) 493,920

Proper Divisor Sum 275,780

Digit Sum / Digital Root 16 (Root: 7)

Adjacent Primes #218137 ← → #218143

1 2 4 5 10 13 20 26 52 65 130 260 839 1,678 3,356 4,195 8,390 10,907 16,780 21,814 43,628 54,535 109,070 218,140

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

218,140 109,070 54,535 163,606 81,803 245,410 122,705 368,116 184,058 92,029 276,088 138,044 69,022 34,511 103,534 51,767 155,302 77,651 232,954 116,477 349,432 174,716 87,358 43,679 131,038 65,519 196,558 98,279 294,838 147,419 442,258 221,129 663,388 331,694 165,847 497,542 248,771 746,314 373,157 1,119,472 559,736 279,868 139,934 69,967 209,902 104,951 314,854 157,427 472,282 236,141 708,424 354,212 177,106 88,553 265,660 132,830 66,415 199,246 99,623 298,870

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