21133281

素因数分解:

$3^1\times {\mathrm{13}}^2\times {\mathrm{73}}^1\times {\mathrm{571}}^1$

素因数の和:673

約数の個数: 24

約数和(自身を含む): 30984096

約数和(自身を除く): 9850815

約数列:

[1, 3, 13, 39, 73, 169, 219, 507, 571, 949, 1713, 2847, 7423, 12337, 22269, 37011, 41683, 96499, 125049, 289497, 541879, 1625637, 7044427, 21133281]

約数ペア:

[(1, 21133281), (3, 7044427), (13, 1625637), (39, 541879), (73, 289497), (169, 125049), (219, 96499), (507, 41683), (571, 37011), (949, 22269), (1713, 12337), (2847, 7423)]