2² × 5² × 139

Prime Factor Structure

Factorization String 2^2 × 5^2 × 139

Distinct Prime Factors 3

Square Status No

Abundance Measure Abundant

Analytical Properties

Total Divisors 18

Divisor Sum (σ) 30,380

Proper Divisor Sum 16,480

Digit Sum / Digital Root 13 (Root: 4)

Adjacent Primes #13883 ← → #13901

1 2 4 5 10 20 25 50 100 139 278 556 695 1,390 2,780 3,475 6,950 13,900

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

13,900 6,950 3,475 10,426 5,213 15,640 7,820 3,910 1,955 5,866 2,933 8,800 4,400 2,200 1,100 550 275 826 413 1,240 620 310 155 466 233 700 350 175 526 263 790 395 1,186 593 1,780 890 445 1,336 668 334 167 502 251 754 377 1,132 566 283 850 425 1,276 638 319 958 479 1,438 719 2,158 1,079 3,238

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