2 × 21821

Prime Factor Structure

Factorization String 2 × 21821

Distinct Prime Factors 2

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 4

Divisor Sum (σ) 65,466

Proper Divisor Sum 21,824

Digit Sum / Digital Root 19 (Root: 1)

Adjacent Primes #43633 ← → #43649

1 2 21,821 43,642

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

43,642 21,821 65,464 32,732 16,366 8,183 24,550 12,275 36,826 18,413 55,240 27,620 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 17,738 8,869 26,608 13,304 6,652 3,326 1,663

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