819405

素因数分解:

$3^2\times 5^1\times {\mathrm{131}}^1\times {\mathrm{139}}^1$

素因数の和:281

約数の個数: 24

約数和(自身を含む): 1441440

約数和(自身を除く): 622035

約数列:

[1, 3, 5, 9, 15, 45, 131, 139, 393, 417, 655, 695, 1179, 1251, 1965, 2085, 5895, 6255, 18209, 54627, 91045, 163881, 273135, 819405]

約数ペア:

[(1, 819405), (3, 273135), (5, 163881), (9, 91045), (15, 54627), (45, 18209), (131, 6255), (139, 5895), (393, 2085), (417, 1965), (655, 1251), (695, 1179)]