λ
Sigma Notebook

643,926

2 × 3 × 17 × 59 × 107
Abundant Even Composite

643,926 is even and not a perfect square. Its factorization is 2 × 3 × 17 × 59 × 107 and its 32 divisors sum to 1,399,680.

Prime Factor Structure

Factorization String 2 × 3 × 17 × 59 × 107
Distinct Prime Factors 5
Square Status No
Abundance Measure Abundant

Analytical Properties

Total Divisors 32
Divisor Sum (σ) 1,399,680
Proper Divisor Sum 755,754
Digit Sum / Digital Root 30 (Root: 3)
Adjacent Primes #643919 ← → #643927

Radix Representation

Decimal 643926
Binary 10011101001101010110 (20 bits)
Octal 0o2351526
Hexadecimal 0x9D356

Divisor Catalog (32)

1 2 3 6 17 34 51 59 102 107 118 177 214 321 354 642 1,003 1,819 2,006 3,009 3,638 5,457 6,018 6,313 10,914 12,626 18,939 37,878 107,321 214,642 321,963 643,926

Collatz Trajectory (123 steps to reach 1)

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

643,926 321,963 965,890 482,945 1,448,836 724,418 362,209 1,086,628 543,314 271,657 814,972 407,486 203,743 611,230 305,615 916,846 458,423 1,375,270 687,635 2,062,906 1,031,453 3,094,360 1,547,180 773,590 386,795 1,160,386 580,193 1,740,580 870,290 435,145 1,305,436 652,718 326,359 979,078 489,539 1,468,618 734,309 2,202,928 1,101,464 550,732 275,366 137,683 413,050 206,525 619,576 309,788 154,894 77,447 232,342 116,171 348,514 174,257 522,772 261,386 130,693 392,080 196,040 98,020 49,010 24,505

More profiles

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