18,201,630

2 × 3 × 5 × 606721

18,201,630 factors as 2 × 3 × 5 × 606721. Its 16 positive divisors give a proper-divisor sum of 25,482,354, so this integer is abundant. The Collatz stopping time is 81 steps.

Prime Factor Structure

Factorization String 2 × 3 × 5 × 606721

Distinct Prime Factors 4

Square Status No

Abundance Measure Abundant

Analytical Properties

Total Divisors 16

Divisor Sum (σ) 43,683,984

Proper Divisor Sum 25,482,354

Digit Sum / Digital Root 21 (Root: 3)

Adjacent Primes #18201629 ← → #18201649

Radix Representation

Decimal	18201630
Binary	1000101011011110000011110 (25 bits)
Octal	0o105336036
Hexadecimal	0x115BC1E

Divisor Catalog (16)

1 2 3 5 6 10 15 30 606,721 1,213,442 1,820,163 3,033,605 3,640,326 6,067,210 9,100,815 18,201,630

Collatz Trajectory (81 steps to reach 1)

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

18,201,630 9,100,815 27,302,446 13,651,223 40,953,670 20,476,835 61,430,506 30,715,253 92,145,760 46,072,880 23,036,440 11,518,220 5,759,110 2,879,555 8,638,666 4,319,333 12,958,000 6,479,000 3,239,500 1,619,750 809,875 2,429,626 1,214,813 3,644,440 1,822,220 911,110 455,555 1,366,666 683,333 2,050,000 1,025,000 512,500 256,250 128,125 384,376 192,188 96,094 48,047 144,142 72,071 216,214 108,107 324,322 162,161 486,484 243,242 121,621 364,864 182,432 91,216 45,608 22,804 11,402 5,701 17,104 8,552 4,276 2,138 1,069 3,208

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