389633320

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{226531}}^1$

素因数の和:226585

約数の個数: 32

約数和(自身を含む): 897066720

約数和(自身を除く): 507433400

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 1720, 226531, 453062, 906124, 1132655, 1812248, 2265310, 4530620, 9061240, 9740833, 19481666, 38963332, 48704165, 77926664, 97408330, 194816660, 389633320]

約数ペア:

[(1, 389633320), (2, 194816660), (4, 97408330), (5, 77926664), (8, 48704165), (10, 38963332), (20, 19481666), (40, 9740833), (43, 9061240), (86, 4530620), (172, 2265310), (215, 1812248), (344, 1132655), (430, 906124), (860, 453062), (1720, 226531)]