65335280

素因数分解:

$2^4\times 5^1\times {\mathrm{816691}}^1$

素因数の和:816704

約数の個数: 20

約数和(自身を含む): 151904712

約数和(自身を除く): 86569432

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 816691, 1633382, 3266764, 4083455, 6533528, 8166910, 13067056, 16333820, 32667640, 65335280]

約数ペア:

[(1, 65335280), (2, 32667640), (4, 16333820), (5, 13067056), (8, 8166910), (10, 6533528), (16, 4083455), (20, 3266764), (40, 1633382), (80, 816691)]