20,121,361

13 × 19 × 81463

20,121,361 factors as 13 × 19 × 81463. Its 8 positive divisors give a proper-divisor sum of 2,688,559, so this integer is deficient. The Collatz stopping time is 115 steps.

Prime Factor Structure

Factorization String 13 × 19 × 81463

Distinct Prime Factors 3

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 8

Divisor Sum (σ) 22,809,920

Proper Divisor Sum 2,688,559

Digit Sum / Digital Root 16 (Root: 7)

Adjacent Primes #20121349 ← → #20121391

Radix Representation

Decimal	20121361
Binary	1001100110000011100010001 (25 bits)
Octal	0o114603421
Hexadecimal	0x1330711

Divisor Catalog (8)

1 13 19 247 81,463 1,059,019 1,547,797 20,121,361

Collatz Trajectory (115 steps to reach 1)

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

20,121,361 60,364,084 30,182,042 15,091,021 45,273,064 22,636,532 11,318,266 5,659,133 16,977,400 8,488,700 4,244,350 2,122,175 6,366,526 3,183,263 9,549,790 4,774,895 14,324,686 7,162,343 21,487,030 10,743,515 32,230,546 16,115,273 48,345,820 24,172,910 12,086,455 36,259,366 18,129,683 54,389,050 27,194,525 81,583,576 40,791,788 20,395,894 10,197,947 30,593,842 15,296,921 45,890,764 22,945,382 11,472,691 34,418,074 17,209,037 51,627,112 25,813,556 12,906,778 6,453,389 19,360,168 9,680,084 4,840,042 2,420,021 7,260,064 3,630,032 1,815,016 907,508 453,754 226,877 680,632 340,316 170,158 85,079 255,238 127,619

More profiles

Browse other published profiles and their separate link collections.

No other profiles in this collection.

← Previous Integer #20,121,360 Browse Full Index Next Integer #20,121,362 →