λ
Sigma Notebook

1,481,781

3 × 7 × 41 × 1721
Deficient Odd Composite

1,481,781 is odd and not a perfect square. Its factorization is 3 × 7 × 41 × 1721 and its 16 divisors sum to 2,314,368.

Prime Factor Structure

Factorization String 3 × 7 × 41 × 1721
Distinct Prime Factors 4
Square Status No
Abundance Measure Deficient

Analytical Properties

Total Divisors 16
Divisor Sum (σ) 2,314,368
Proper Divisor Sum 832,587
Digit Sum / Digital Root 30 (Root: 3)
Adjacent Primes #1481773 ← → #1481783

Radix Representation

Decimal 1481781
Binary 101101001110000110101 (21 bits)
Octal 0o5516065
Hexadecimal 0x169C35

Divisor Catalog (16)

1 3 7 21 41 123 287 861 1,721 5,163 12,047 36,141 70,561 211,683 493,927 1,481,781

Collatz Trajectory (181 steps to reach 1)

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

1,481,781 4,445,344 2,222,672 1,111,336 555,668 277,834 138,917 416,752 208,376 104,188 52,094 26,047 78,142 39,071 117,214 58,607 175,822 87,911 263,734 131,867 395,602 197,801 593,404 296,702 148,351 445,054 222,527 667,582 333,791 1,001,374 500,687 1,502,062 751,031 2,253,094 1,126,547 3,379,642 1,689,821 5,069,464 2,534,732 1,267,366 633,683 1,901,050 950,525 2,851,576 1,425,788 712,894 356,447 1,069,342 534,671 1,604,014 802,007 2,406,022 1,203,011 3,609,034 1,804,517 5,413,552 2,706,776 1,353,388 676,694 338,347

More profiles

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