21,030

2 × 3 × 5 × 701

Prime Factor Structure

Factorization String 2 × 3 × 5 × 701

Distinct Prime Factors 4

Square Status No

Abundance Measure Abundant

Total Divisors 16

Divisor Sum (σ) 50,544

Proper Divisor Sum 29,514

Digit Sum / Digital Root 6 (Root: 6)

Adjacent Primes #21023 ← → #21031

1 2 3 5 6 10 15 30 701 1,402 2,103 3,505 4,206 7,010 10,515 21,030

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

21,030 10,515 31,546 15,773 47,320 23,660 11,830 5,915 17,746 8,873 26,620 13,310 6,655 19,966 9,983 29,950 14,975 44,926 22,463 67,390 33,695 101,086 50,543 151,630 75,815 227,446 113,723 341,170 170,585 511,756 255,878 127,939 383,818 191,909 575,728 287,864 143,932 71,966 35,983 107,950 53,975 161,926 80,963 242,890 121,445 364,336 182,168 91,084 45,542 22,771 68,314 34,157 102,472 51,236 25,618 12,809 38,428 19,214 9,607 28,822

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