21000585963

素因数分解:

$3^1\times 7^2\times {\mathrm{53}}^1\times {\mathrm{2695493}}^1$

素因数の和:2695563

約数の個数: 24

約数和(自身を含む): 33186922128

約数和(自身を除く): 12186336165

約数列:

[1, 3, 7, 21, 49, 53, 147, 159, 371, 1113, 2597, 7791, 2695493, 8086479, 18868451, 56605353, 132079157, 142861129, 396237471, 428583387, 1000027903, 3000083709, 7000195321, 21000585963]

約数ペア:

[(1, 21000585963), (3, 7000195321), (7, 3000083709), (21, 1000027903), (49, 428583387), (53, 396237471), (147, 142861129), (159, 132079157), (371, 56605353), (1113, 18868451), (2597, 8086479), (7791, 2695493)]