172,731

3 × 13 × 43 × 103

172,731 has the prime decomposition 3 × 13 × 43 × 103. Its 4 distinct prime factors produce 16 positive divisors.

Prime Factor Structure

Factorization String 3 × 13 × 43 × 103

Distinct Prime Factors 4

Square Status No

Abundance Measure Deficient

Total Divisors 16

Divisor Sum (σ) 256,256

Proper Divisor Sum 83,525

Digit Sum / Digital Root 21 (Root: 3)

Adjacent Primes #172721 ← → #172741

1 3 13 39 43 103 129 309 559 1,339 1,677 4,017 4,429 13,287 57,577 172,731

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

172,731 518,194 259,097 777,292 388,646 194,323 582,970 291,485 874,456 437,228 218,614 109,307 327,922 163,961 491,884 245,942 122,971 368,914 184,457 553,372 276,686 138,343 415,030 207,515 622,546 311,273 933,820 466,910 233,455 700,366 350,183 1,050,550 525,275 1,575,826 787,913 2,363,740 1,181,870 590,935 1,772,806 886,403 2,659,210 1,329,605 3,988,816 1,994,408 997,204 498,602 249,301 747,904 373,952 186,976 93,488 46,744 23,372 11,686 5,843 17,530 8,765 26,296 13,148 6,574

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