389888320

素因数分解:

$2^6\times 5^1\times {\mathrm{1218401}}^1$

素因数の和:1218418

約数の個数: 28

約数和(自身を含む): 928422324

約数和(自身を除く): 538534004

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 1218401, 2436802, 4873604, 6092005, 9747208, 12184010, 19494416, 24368020, 38988832, 48736040, 77977664, 97472080, 194944160, 389888320]

約数ペア:

[(1, 389888320), (2, 194944160), (4, 97472080), (5, 77977664), (8, 48736040), (10, 38988832), (16, 24368020), (20, 19494416), (32, 12184010), (40, 9747208), (64, 6092005), (80, 4873604), (160, 2436802), (320, 1218401)]