20,852

2² × 13 × 401

Prime Factor Structure

Factorization String 2^2 × 13 × 401

Distinct Prime Factors 3

Square Status No

Abundance Measure Deficient

Total Divisors 12

Divisor Sum (σ) 39,396

Proper Divisor Sum 18,544

Digit Sum / Digital Root 17 (Root: 8)

Adjacent Primes #20849 ← → #20857

1 2 4 13 26 52 401 802 1,604 5,213 10,426 20,852

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

20,852 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 1,619 4,858

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