256842009

素因数分解:

$3^6\times {\mathrm{29}}^1\times {\mathrm{12149}}^1$

素因数の和:12196

約数の個数: 28

約数和(自身を含む): 398398500

約数和(自身を除く): 141556491

約数列:

[1, 3, 9, 27, 29, 81, 87, 243, 261, 729, 783, 2349, 7047, 12149, 21141, 36447, 109341, 328023, 352321, 984069, 1056963, 2952207, 3170889, 8856621, 9512667, 28538001, 85614003, 256842009]

約数ペア:

[(1, 256842009), (3, 85614003), (9, 28538001), (27, 9512667), (29, 8856621), (81, 3170889), (87, 2952207), (243, 1056963), (261, 984069), (729, 352321), (783, 328023), (2349, 109341), (7047, 36447), (12149, 21141)]