2,657,590

2 × 5 × 13 × 20443

2,657,590 factors as 2 × 5 × 13 × 20443. Its 16 positive divisors give a proper-divisor sum of 2,494,298, so this integer is deficient. The Collatz stopping time is 143 steps.

Prime Factor Structure

Factorization String 2 × 5 × 13 × 20443

Distinct Prime Factors 4

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 16

Divisor Sum (σ) 5,151,888

Proper Divisor Sum 2,494,298

Digit Sum / Digital Root 34 (Root: 7)

Adjacent Primes #2657573 ← → #2657591

Radix Representation

Decimal	2657590
Binary	1010001000110100110110 (22 bits)
Octal	0o12106466
Hexadecimal	0x288D36

Divisor Catalog (16)

1 2 5 10 13 26 65 130 20,443 40,886 102,215 204,430 265,759 531,518 1,328,795 2,657,590

Collatz Trajectory (143 steps to reach 1)

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

2,657,590 1,328,795 3,986,386 1,993,193 5,979,580 2,989,790 1,494,895 4,484,686 2,242,343 6,727,030 3,363,515 10,090,546 5,045,273 15,135,820 7,567,910 3,783,955 11,351,866 5,675,933 17,027,800 8,513,900 4,256,950 2,128,475 6,385,426 3,192,713 9,578,140 4,789,070 2,394,535 7,183,606 3,591,803 10,775,410 5,387,705 16,163,116 8,081,558 4,040,779 12,122,338 6,061,169 18,183,508 9,091,754 4,545,877 13,637,632 6,818,816 3,409,408 1,704,704 852,352 426,176 213,088 106,544 53,272 26,636 13,318 6,659 19,978 9,989 29,968 14,984 7,492 3,746 1,873 5,620 2,810

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