391064360

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{227363}}^1$

素因数の和:227417

約数の個数: 32

約数和(自身を含む): 900361440

約数和(自身を除く): 509297080

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 1720, 227363, 454726, 909452, 1136815, 1818904, 2273630, 4547260, 9094520, 9776609, 19553218, 39106436, 48883045, 78212872, 97766090, 195532180, 391064360]

約数ペア:

[(1, 391064360), (2, 195532180), (4, 97766090), (5, 78212872), (8, 48883045), (10, 39106436), (20, 19553218), (40, 9776609), (43, 9094520), (86, 4547260), (172, 2273630), (215, 1818904), (344, 1136815), (430, 909452), (860, 454726), (1720, 227363)]