198,721

19 × 10459

198,721 factors as 19 × 10459. Its 4 positive divisors give a proper-divisor sum of 10,479, so this integer is deficient. The Collatz stopping time is 142 steps.

Prime Factor Structure

Factorization String 19 × 10459

Distinct Prime Factors 2

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 4

Divisor Sum (σ) 209,200

Proper Divisor Sum 10,479

Digit Sum / Digital Root 28 (Root: 1)

Adjacent Primes #198719 ← → #198733

Radix Representation

Decimal	198721
Binary	110000100001000001 (18 bits)
Octal	0o604101
Hexadecimal	0x30841

Divisor Catalog (4)

1 19 10,459 198,721

Collatz Trajectory (142 steps to reach 1)

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

198,721 596,164 298,082 149,041 447,124 223,562 111,781 335,344 167,672 83,836 41,918 20,959 62,878 31,439 94,318 47,159 141,478 70,739 212,218 106,109 318,328 159,164 79,582 39,791 119,374 59,687 179,062 89,531 268,594 134,297 402,892 201,446 100,723 302,170 151,085 453,256 226,628 113,314 56,657 169,972 84,986 42,493 127,480 63,740 31,870 15,935 47,806 23,903 71,710 35,855 107,566 53,783 161,350 80,675 242,026 121,013 363,040 181,520 90,760 45,380

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