15,421,826

2 × 7 × 1101559

15,421,826 factors as 2 × 7 × 1101559. Its 8 positive divisors give a proper-divisor sum of 11,015,614, so this integer is deficient. The Collatz stopping time is 218 steps.

Prime Factor Structure

Factorization String 2 × 7 × 1101559

Distinct Prime Factors 3

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 8

Divisor Sum (σ) 26,437,440

Proper Divisor Sum 11,015,614

Digit Sum / Digital Root 29 (Root: 2)

Adjacent Primes #15421817 ← → #15421843

Radix Representation

Decimal	15421826
Binary	111010110101000110000010 (24 bits)
Octal	0o72650602
Hexadecimal	0xEB5182

Divisor Catalog (8)

1 2 7 14 1,101,559 2,203,118 7,710,913 15,421,826

Collatz Trajectory (218 steps to reach 1)

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

15,421,826 7,710,913 23,132,740 11,566,370 5,783,185 17,349,556 8,674,778 4,337,389 13,012,168 6,506,084 3,253,042 1,626,521 4,879,564 2,439,782 1,219,891 3,659,674 1,829,837 5,489,512 2,744,756 1,372,378 686,189 2,058,568 1,029,284 514,642 257,321 771,964 385,982 192,991 578,974 289,487 868,462 434,231 1,302,694 651,347 1,954,042 977,021 2,931,064 1,465,532 732,766 366,383 1,099,150 549,575 1,648,726 824,363 2,473,090 1,236,545 3,709,636 1,854,818 927,409 2,782,228 1,391,114 695,557 2,086,672 1,043,336 521,668 260,834 130,417 391,252 195,626 97,813

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