2² × 5² × 643

Prime Factor Structure

Factorization String 2^2 × 5^2 × 643

Distinct Prime Factors 3

Square Status No

Abundance Measure Abundant

Analytical Properties

Total Divisors 18

Divisor Sum (σ) 139,748

Proper Divisor Sum 75,448

Digit Sum / Digital Root 13 (Root: 4)

Adjacent Primes #64283 ← → #64301

1 2 4 5 10 20 25 50 100 643 1,286 2,572 3,215 6,430 12,860 16,075 32,150 64,300

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

64,300 32,150 16,075 48,226 24,113 72,340 36,170 18,085 54,256 27,128 13,564 6,782 3,391 10,174 5,087 15,262 7,631 22,894 11,447 34,342 17,171 51,514 25,757 77,272 38,636 19,318 9,659 28,978 14,489 43,468 21,734 10,867 32,602 16,301 48,904 24,452 12,226 6,113 18,340 9,170 4,585 13,756 6,878 3,439 10,318 5,159 15,478 7,739 23,218 11,609 34,828 17,414 8,707 26,122 13,061 39,184 19,592 9,796 4,898 2,449

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