3 × 5 × 29 × 43

Prime Factor Structure

Factorization String 3 × 5 × 29 × 43

Distinct Prime Factors 4

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 16

Divisor Sum (σ) 31,680

Proper Divisor Sum 12,975

Digit Sum / Digital Root 21 (Root: 3)

Adjacent Primes #18701 ← → #18713

1 3 5 15 29 43 87 129 145 215 435 645 1,247 3,741 6,235 18,705

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

18,705 56,116 28,058 14,029 42,088 21,044 10,522 5,261 15,784 7,892 3,946 1,973 5,920 2,960 1,480 740 370 185 556 278 139 418 209 628 314 157 472 236 118 59 178 89 268 134 67 202 101 304 152 76 38 19 58 29 88 44 22 11 34 17 52 26 13 40 20 10 5 16 8 4

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