8997940

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{64271}}^1$

素因数の和:64287

約数の個数: 24

約数和(自身を含む): 21595392

約数和(自身を除く): 12597452

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 64271, 128542, 257084, 321355, 449897, 642710, 899794, 1285420, 1799588, 2249485, 4498970, 8997940]

約数ペア:

[(1, 8997940), (2, 4498970), (4, 2249485), (5, 1799588), (7, 1285420), (10, 899794), (14, 642710), (20, 449897), (28, 321355), (35, 257084), (70, 128542), (140, 64271)]