205721030

素因数分解:

$2^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{478421}}^1$

素因数の和:478471

約数の個数: 16

約数和(自身を含む): 378910224

約数和(自身を除く): 173189194

約数列:

[1, 2, 5, 10, 43, 86, 215, 430, 478421, 956842, 2392105, 4784210, 20572103, 41144206, 102860515, 205721030]

約数ペア:

[(1, 205721030), (2, 102860515), (5, 41144206), (10, 20572103), (43, 4784210), (86, 2392105), (215, 956842), (430, 478421)]