21086001

素因数分解:

$3^4\times {\mathrm{17}}^1\times {\mathrm{15313}}^1$

素因数の和:15342

約数の個数: 20

約数和(自身を含む): 33353892

約数和(自身を除く): 12267891

約数列:

[1, 3, 9, 17, 27, 51, 81, 153, 459, 1377, 15313, 45939, 137817, 260321, 413451, 780963, 1240353, 2342889, 7028667, 21086001]

約数ペア:

[(1, 21086001), (3, 7028667), (9, 2342889), (17, 1240353), (27, 780963), (51, 413451), (81, 260321), (153, 137817), (459, 45939), (1377, 15313)]