642262660

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{2470241}}^1$

素因数の和:2470263

約数の個数: 24

約数和(自身を含む): 1452502296

約数和(自身を除く): 810239636

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 2470241, 4940482, 9880964, 12351205, 24702410, 32113133, 49404820, 64226266, 128452532, 160565665, 321131330, 642262660]

約数ペア:

[(1, 642262660), (2, 321131330), (4, 160565665), (5, 128452532), (10, 64226266), (13, 49404820), (20, 32113133), (26, 24702410), (52, 12351205), (65, 9880964), (130, 4940482), (260, 2470241)]