20911581

素因数分解:

$3^3\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{1571}}^1$

素因数の和:1626

約数の個数: 32

約数和(自身を含む): 33955200

約数和(自身を除く): 13043619

約数列:

[1, 3, 9, 17, 27, 29, 51, 87, 153, 261, 459, 493, 783, 1479, 1571, 4437, 4713, 13311, 14139, 26707, 42417, 45559, 80121, 136677, 240363, 410031, 721089, 774503, 1230093, 2323509, 6970527, 20911581]

約数ペア:

[(1, 20911581), (3, 6970527), (9, 2323509), (17, 1230093), (27, 774503), (29, 721089), (51, 410031), (87, 240363), (153, 136677), (261, 80121), (459, 45559), (493, 42417), (783, 26707), (1479, 14139), (1571, 13311), (4437, 4713)]