2² × 5 × 661

Prime Factor Structure

Factorization String 2^2 × 5 × 661

Distinct Prime Factors 3

Square Status No

Abundance Measure Abundant

Analytical Properties

Total Divisors 12

Divisor Sum (σ) 27,804

Proper Divisor Sum 14,584

Digit Sum / Digital Root 8 (Root: 8)

Adjacent Primes #13219 ← → #13229

1 2 4 5 10 20 661 1,322 2,644 3,305 6,610 13,220

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

13,220 6,610 3,305 9,916 4,958 2,479 7,438 3,719 11,158 5,579 16,738 8,369 25,108 12,554 6,277 18,832 9,416 4,708 2,354 1,177 3,532 1,766 883 2,650 1,325 3,976 1,988 994 497 1,492 746 373 1,120 560 280 140 70 35 106 53 160 80 40 20 10 5 16 8 4 2 1

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