3³ × 17 × 47

Prime Factor Structure

Factorization String 3^3 × 17 × 47

Distinct Prime Factors 3

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 16

Divisor Sum (σ) 34,560

Proper Divisor Sum 12,987

Digit Sum / Digital Root 18 (Root: 9)

Adjacent Primes #21569 ← → #21577

1 3 9 17 27 47 51 141 153 423 459 799 1,269 2,397 7,191 21,573

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

21,573 64,720 32,360 16,180 8,090 4,045 12,136 6,068 3,034 1,517 4,552 2,276 1,138 569 1,708 854 427 1,282 641 1,924 962 481 1,444 722 361 1,084 542 271 814 407 1,222 611 1,834 917 2,752 1,376 688 344 172 86 43 130 65 196 98 49 148 74 37 112 56 28 14 7 22 11 34 17 52 26

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