3² × 13² × 17

Prime Factor Structure

Factorization String 3^2 × 13^2 × 17

Distinct Prime Factors 3

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 18

Divisor Sum (σ) 42,822

Proper Divisor Sum 16,965

Digit Sum / Digital Root 27 (Root: 9)

Adjacent Primes #25849 ← → #25867

1 3 9 13 17 39 51 117 153 169 221 507 663 1,521 1,989 2,873 8,619 25,857

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

25,857 77,572 38,786 19,393 58,180 29,090 14,545 43,636 21,818 10,909 32,728 16,364 8,182 4,091 12,274 6,137 18,412 9,206 4,603 13,810 6,905 20,716 10,358 5,179 15,538 7,769 23,308 11,654 5,827 17,482 8,741 26,224 13,112 6,556 3,278 1,639 4,918 2,459 7,378 3,689 11,068 5,534 2,767 8,302 4,151 12,454 6,227 18,682 9,341 28,024 14,012 7,006 3,503 10,510 5,255 15,766 7,883 23,650 11,825 35,476

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