391,310

2 × 5 × 109 × 359

391,310 factors as 2 × 5 × 109 × 359. Its 16 positive divisors give a proper-divisor sum of 321,490, so this integer is deficient. The Collatz stopping time is 192 steps.

Prime Factor Structure

Factorization String 2 × 5 × 109 × 359

Distinct Prime Factors 4

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 16

Divisor Sum (σ) 712,800

Proper Divisor Sum 321,490

Digit Sum / Digital Root 17 (Root: 8)

Adjacent Primes #391301 ← → #391331

Radix Representation

Decimal	391310
Binary	1011111100010001110 (19 bits)
Octal	0o1374216
Hexadecimal	0x5F88E

Divisor Catalog (16)

1 2 5 10 109 218 359 545 718 1,090 1,795 3,590 39,131 78,262 195,655 391,310

Collatz Trajectory (192 steps to reach 1)

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

391,310 195,655 586,966 293,483 880,450 440,225 1,320,676 660,338 330,169 990,508 495,254 247,627 742,882 371,441 1,114,324 557,162 278,581 835,744 417,872 208,936 104,468 52,234 26,117 78,352 39,176 19,588 9,794 4,897 14,692 7,346 3,673 11,020 5,510 2,755 8,266 4,133 12,400 6,200 3,100 1,550 775 2,326 1,163 3,490 1,745 5,236 2,618 1,309 3,928 1,964 982 491 1,474 737 2,212 1,106 553 1,660 830 415

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