1,621,986

2 × 3 × 83 × 3257

1,621,986 factors as 2 × 3 × 83 × 3257. Its 16 positive divisors give a proper-divisor sum of 1,662,078, so this integer is abundant. The Collatz stopping time is 207 steps.

Prime Factor Structure

Factorization String 2 × 3 × 83 × 3257

Distinct Prime Factors 4

Square Status No

Abundance Measure Abundant

Analytical Properties

Total Divisors 16

Divisor Sum (σ) 3,284,064

Proper Divisor Sum 1,662,078

Digit Sum / Digital Root 33 (Root: 6)

Adjacent Primes #1621979 ← → #1621993

Radix Representation

Decimal	1621986
Binary	110001011111111100010 (21 bits)
Octal	0o6137742
Hexadecimal	0x18BFE2

Divisor Catalog (16)

1 2 3 6 83 166 249 498 3,257 6,514 9,771 19,542 270,331 540,662 810,993 1,621,986

Collatz Trajectory (207 steps to reach 1)

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

1,621,986 810,993 2,432,980 1,216,490 608,245 1,824,736 912,368 456,184 228,092 114,046 57,023 171,070 85,535 256,606 128,303 384,910 192,455 577,366 288,683 866,050 433,025 1,299,076 649,538 324,769 974,308 487,154 243,577 730,732 365,366 182,683 548,050 274,025 822,076 411,038 205,519 616,558 308,279 924,838 462,419 1,387,258 693,629 2,080,888 1,040,444 520,222 260,111 780,334 390,167 1,170,502 585,251 1,755,754 877,877 2,633,632 1,316,816 658,408 329,204 164,602 82,301 246,904 123,452 61,726

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