26,991,620

2² × 5 × 67 × 20143

26,991,620 factors as 2^2 × 5 × 67 × 20143. Its 24 positive divisors give a proper-divisor sum of 30,539,644, so this integer is abundant. The Collatz stopping time is 255 steps.

Prime Factor Structure

Factorization String 2^2 × 5 × 67 × 20143

Distinct Prime Factors 4

Square Status No

Abundance Measure Abundant

Analytical Properties

Total Divisors 24

Divisor Sum (σ) 57,531,264

Proper Divisor Sum 30,539,644

Digit Sum / Digital Root 35 (Root: 8)

Adjacent Primes #26991619 ← → #26991623

Radix Representation

Decimal	26991620
Binary	1100110111101110000000100 (25 bits)
Octal	0o146756004
Hexadecimal	0x19BDC04

Divisor Catalog (24)

Collatz Trajectory (255 steps to reach 1)

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

26,991,620 13,495,810 6,747,905 20,243,716 10,121,858 5,060,929 15,182,788 7,591,394 3,795,697 11,387,092 5,693,546 2,846,773 8,540,320 4,270,160 2,135,080 1,067,540 533,770 266,885 800,656 400,328 200,164 100,082 50,041 150,124 75,062 37,531 112,594 56,297 168,892 84,446 42,223 126,670 63,335 190,006 95,003 285,010 142,505 427,516 213,758 106,879 320,638 160,319 480,958 240,479 721,438 360,719 1,082,158 541,079 1,623,238 811,619 2,434,858 1,217,429 3,652,288 1,826,144 913,072 456,536 228,268 114,134 57,067 171,202

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