21058479

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{9473}}^1$

素因数の和:9511

約数の個数: 24

約数和(自身を含む): 34485360

約数和(自身を除く): 13426881

約数列:

[1, 3, 9, 13, 19, 39, 57, 117, 171, 247, 741, 2223, 9473, 28419, 85257, 123149, 179987, 369447, 539961, 1108341, 1619883, 2339831, 7019493, 21058479]

約数ペア:

[(1, 21058479), (3, 7019493), (9, 2339831), (13, 1619883), (19, 1108341), (39, 539961), (57, 369447), (117, 179987), (171, 123149), (247, 85257), (741, 28419), (2223, 9473)]