21,562,002

2 × 3² × 7 × 11 × 47 × 331

Prime Factor Structure

Factorization String 2 × 3^2 × 7 × 11 × 47 × 331

Distinct Prime Factors 6

Square Status No

Abundance Measure Abundant

Total Divisors 96

Divisor Sum (σ) 59,664,384

Proper Divisor Sum 38,102,382

Digit Sum / Digital Root 18 (Root: 9)

Adjacent Primes #21561997 ← → #21562003

1 2 3 6 7 9 11 14 18 21 22 33 42 47 63 66 77 94 99 126 141 154 198 231 282 329 331 423 462 517 658 662 693 846 987 993 1,034 1,386 1,551 1,974 1,986 2,317 2,961 2,979 3,102 3,619 3,641 4,634 4,653 5,922 5,958 6,951 7,238 7,282 9,306 10,857 10,923 13,902 15,557 20,853

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

21,562,002 10,781,001 32,343,004 16,171,502 8,085,751 24,257,254 12,128,627 36,385,882 18,192,941 54,578,824 27,289,412 13,644,706 6,822,353 20,467,060 10,233,530 5,116,765 15,350,296 7,675,148 3,837,574 1,918,787 5,756,362 2,878,181 8,634,544 4,317,272 2,158,636 1,079,318 539,659 1,618,978 809,489 2,428,468 1,214,234 607,117 1,821,352 910,676 455,338 227,669 683,008 341,504 170,752 85,376 42,688 21,344 10,672 5,336 2,668 1,334 667 2,002 1,001 3,004 1,502 751 2,254 1,127 3,382 1,691 5,074 2,537 7,612 3,806

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