21,123,746

2 × 7 × 101 × 14939

Prime Factor Structure

Factorization String 2 × 7 × 101 × 14939

Distinct Prime Factors 4

Square Status No

Abundance Measure Deficient

Total Divisors 16

Divisor Sum (σ) 36,573,120

Proper Divisor Sum 15,449,374

Digit Sum / Digital Root 26 (Root: 8)

Adjacent Primes #21123721 ← → #21123757

1 2 7 14 101 202 707 1,414 14,939 29,878 104,573 209,146 1,508,839 3,017,678 10,561,873 21,123,746

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

21,123,746 10,561,873 31,685,620 15,842,810 7,921,405 23,764,216 11,882,108 5,941,054 2,970,527 8,911,582 4,455,791 13,367,374 6,683,687 20,051,062 10,025,531 30,076,594 15,038,297 45,114,892 22,557,446 11,278,723 33,836,170 16,918,085 50,754,256 25,377,128 12,688,564 6,344,282 3,172,141 9,516,424 4,758,212 2,379,106 1,189,553 3,568,660 1,784,330 892,165 2,676,496 1,338,248 669,124 334,562 167,281 501,844 250,922 125,461 376,384 188,192 94,096 47,048 23,524 11,762 5,881 17,644 8,822 4,411 13,234 6,617 19,852 9,926 4,963 14,890 7,445 22,336

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