21259413

素因数分解:

$3^2\times 7^1\times {\mathrm{53}}^1\times {\mathrm{6367}}^1$

素因数の和:6433

約数の個数: 24

約数和(自身を含む): 35762688

約数和(自身を除く): 14503275

約数列:

[1, 3, 7, 9, 21, 53, 63, 159, 371, 477, 1113, 3339, 6367, 19101, 44569, 57303, 133707, 337451, 401121, 1012353, 2362157, 3037059, 7086471, 21259413]

約数ペア:

[(1, 21259413), (3, 7086471), (7, 3037059), (9, 2362157), (21, 1012353), (53, 401121), (63, 337451), (159, 133707), (371, 57303), (477, 44569), (1113, 19101), (3339, 6367)]