21,362,940

2² × 3⁴ × 5 × 13187

Prime Factor Structure

Factorization String 2^2 × 3^4 × 5 × 13187

Distinct Prime Factors 4

Square Status No

Abundance Measure Abundant

Total Divisors 60

Divisor Sum (σ) 67,021,416

Proper Divisor Sum 45,658,476

Digit Sum / Digital Root 27 (Root: 9)

Adjacent Primes #21362917 ← → #21362941

1 2 3 4 5 6 9 10 12 15 18 20 27 30 36 45 54 60 81 90 108 135 162 180 270 324 405 540 810 1,620 13,187 26,374 39,561 52,748 65,935 79,122 118,683 131,870 158,244 197,805 237,366 263,740 356,049 395,610 474,732 593,415 712,098 791,220 1,068,147 1,186,830 1,424,196 1,780,245 2,136,294 2,373,660 3,560,490 4,272,588 5,340,735 7,120,980 10,681,470 21,362,940

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

21,362,940 10,681,470 5,340,735 16,022,206 8,011,103 24,033,310 12,016,655 36,049,966 18,024,983 54,074,950 27,037,475 81,112,426 40,556,213 121,668,640 60,834,320 30,417,160 15,208,580 7,604,290 3,802,145 11,406,436 5,703,218 2,851,609 8,554,828 4,277,414 2,138,707 6,416,122 3,208,061 9,624,184 4,812,092 2,406,046 1,203,023 3,609,070 1,804,535 5,413,606 2,706,803 8,120,410 4,060,205 12,180,616 6,090,308 3,045,154 1,522,577 4,567,732 2,283,866 1,141,933 3,425,800 1,712,900 856,450 428,225 1,284,676 642,338 321,169 963,508 481,754 240,877 722,632 361,316 180,658 90,329 270,988 135,494

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