21409486576

素因数分解:

$2^4\times {\mathrm{2647}}^1\times {\mathrm{505513}}^1$

素因数の和:508168

約数の個数: 20

約数和(自身を含む): 41496633232

約数和(自身を除く): 20087146656

約数列:

[1, 2, 4, 8, 16, 2647, 5294, 10588, 21176, 42352, 505513, 1011026, 2022052, 4044104, 8088208, 1338092911, 2676185822, 5352371644, 10704743288, 21409486576]

約数ペア:

[(1, 21409486576), (2, 10704743288), (4, 5352371644), (8, 2676185822), (16, 1338092911), (2647, 8088208), (5294, 4044104), (10588, 2022052), (21176, 1011026), (42352, 505513)]