2 × 3³ × 397

Prime Factor Structure

Factorization String 2 × 3^3 × 397

Distinct Prime Factors 3

Square Status No

Abundance Measure Abundant

Analytical Properties

Total Divisors 16

Divisor Sum (σ) 47,760

Proper Divisor Sum 26,322

Digit Sum / Digital Root 18 (Root: 9)

Adjacent Primes #21433 ← → #21467

1 2 3 6 9 18 27 54 397 794 1,191 2,382 3,573 7,146 10,719 21,438

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

21,438 10,719 32,158 16,079 48,238 24,119 72,358 36,179 108,538 54,269 162,808 81,404 40,702 20,351 61,054 30,527 91,582 45,791 137,374 68,687 206,062 103,031 309,094 154,547 463,642 231,821 695,464 347,732 173,866 86,933 260,800 130,400 65,200 32,600 16,300 8,150 4,075 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

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