18,736,445

5 × 7 × 13 × 41179

18,736,445 factors as 5 × 7 × 13 × 41179. Its 16 positive divisors give a proper-divisor sum of 8,936,515, so this integer is deficient. The Collatz stopping time is 156 steps.

Prime Factor Structure

Factorization String 5 × 7 × 13 × 41179

Distinct Prime Factors 4

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 16

Divisor Sum (σ) 27,672,960

Proper Divisor Sum 8,936,515

Digit Sum / Digital Root 38 (Root: 2)

Adjacent Primes #18736441 ← → #18736457

Radix Representation

Decimal	18736445
Binary	1000111011110010100111101 (25 bits)
Octal	0o107362475
Hexadecimal	0x11DE53D

Divisor Catalog (16)

1 5 7 13 35 65 91 455 41,179 205,895 288,253 535,327 1,441,265 2,676,635 3,747,289 18,736,445

Collatz Trajectory (156 steps to reach 1)

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

18,736,445 56,209,336 28,104,668 14,052,334 7,026,167 21,078,502 10,539,251 31,617,754 15,808,877 47,426,632 23,713,316 11,856,658 5,928,329 17,784,988 8,892,494 4,446,247 13,338,742 6,669,371 20,008,114 10,004,057 30,012,172 15,006,086 7,503,043 22,509,130 11,254,565 33,763,696 16,881,848 8,440,924 4,220,462 2,110,231 6,330,694 3,165,347 9,496,042 4,748,021 14,244,064 7,122,032 3,561,016 1,780,508 890,254 445,127 1,335,382 667,691 2,003,074 1,001,537 3,004,612 1,502,306 751,153 2,253,460 1,126,730 563,365 1,690,096 845,048 422,524 211,262 105,631 316,894 158,447 475,342 237,671 713,014

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