21280495105

素因数分解:

$5^1\times {\mathrm{43}}^1\times {\mathrm{443}}^1\times {\mathrm{223429}}^1$

素因数の和:223920

約数の個数: 16

約数和(自身を含む): 26189570880

約数和(自身を除く): 4909075775

約数列:

[1, 5, 43, 215, 443, 2215, 19049, 95245, 223429, 1117145, 9607447, 48037235, 98979047, 494895235, 4256099021, 21280495105]

約数ペア:

[(1, 21280495105), (5, 4256099021), (43, 494895235), (215, 98979047), (443, 48037235), (2215, 9607447), (19049, 1117145), (95245, 223429)]