21881907

素因数分解:

$3^5\times {\mathrm{17}}^1\times {\mathrm{5297}}^1$

素因数の和:5329

約数の個数: 24

約数和(自身を含む): 34712496

約数和(自身を除く): 12830589

約数列:

[1, 3, 9, 17, 27, 51, 81, 153, 243, 459, 1377, 4131, 5297, 15891, 47673, 90049, 143019, 270147, 429057, 810441, 1287171, 2431323, 7293969, 21881907]

約数ペア:

[(1, 21881907), (3, 7293969), (9, 2431323), (17, 1287171), (27, 810441), (51, 429057), (81, 270147), (153, 143019), (243, 90049), (459, 47673), (1377, 15891), (4131, 5297)]