21000908033

素因数分解:

$7^1\times {\mathrm{37}}^1\times {\mathrm{103}}^2\times {\mathrm{7643}}^1$

素因数の和:7893

約数の個数: 24

約数和(自身を含む): 24894612288

約数和(自身を除く): 3893704255

約数列:

[1, 7, 37, 103, 259, 721, 3811, 7643, 10609, 26677, 53501, 74263, 282791, 392533, 787229, 1979537, 2747731, 5510603, 29127473, 81084587, 203892311, 567592109, 3000129719, 21000908033]

約数ペア:

[(1, 21000908033), (7, 3000129719), (37, 567592109), (103, 203892311), (259, 81084587), (721, 29127473), (3811, 5510603), (7643, 2747731), (10609, 1979537), (26677, 787229), (53501, 392533), (74263, 282791)]