21,049,518

2 × 3 × 7² × 71597

Prime Factor Structure

Factorization String 2 × 3 × 7^2 × 71597

Distinct Prime Factors 4

Square Status No

Abundance Measure Abundant

Total Divisors 24

Divisor Sum (σ) 48,973,032

Proper Divisor Sum 27,923,514

Digit Sum / Digital Root 30 (Root: 3)

Adjacent Primes #21049517 ← → #21049541

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

21,049,518 10,524,759 31,574,278 15,787,139 47,361,418 23,680,709 71,042,128 35,521,064 17,760,532 8,880,266 4,440,133 13,320,400 6,660,200 3,330,100 1,665,050 832,525 2,497,576 1,248,788 624,394 312,197 936,592 468,296 234,148 117,074 58,537 175,612 87,806 43,903 131,710 65,855 197,566 98,783 296,350 148,175 444,526 222,263 666,790 333,395 1,000,186 500,093 1,500,280 750,140 375,070 187,535 562,606 281,303 843,910 421,955 1,265,866 632,933 1,898,800 949,400 474,700 237,350 118,675 356,026 178,013 534,040 267,020 133,510

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