21059259

素因数分解:

$3^1\times {\mathrm{13}}^2\times {\mathrm{73}}^1\times {\mathrm{569}}^1$

素因数の和:671

約数の個数: 24

約数和(自身を含む): 30875760

約数和(自身を除く): 9816501

約数列:

[1, 3, 13, 39, 73, 169, 219, 507, 569, 949, 1707, 2847, 7397, 12337, 22191, 37011, 41537, 96161, 124611, 288483, 539981, 1619943, 7019753, 21059259]

約数ペア:

[(1, 21059259), (3, 7019753), (13, 1619943), (39, 539981), (73, 288483), (169, 124611), (219, 96161), (507, 41537), (569, 37011), (949, 22191), (1707, 12337), (2847, 7397)]