21472340785

素因数分解:

$5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{8640781}}^1$

素因数の和:8640864

約数の個数: 16

約数和(自身を含む): 29862542592

約数和(自身を除く): 8390201807

約数列:

[1, 5, 7, 35, 71, 355, 497, 2485, 8640781, 43203905, 60485467, 302427335, 613495451, 3067477255, 4294468157, 21472340785]

約数ペア:

[(1, 21472340785), (5, 4294468157), (7, 3067477255), (35, 613495451), (71, 302427335), (355, 60485467), (497, 43203905), (2485, 8640781)]