668826040

素因数分解:

$2^3\times 5^1\times {\mathrm{101}}^1\times {\mathrm{165551}}^1$

素因数の和:165663

約数の個数: 32

約数和(自身を含む): 1519767360

約数和(自身を除く): 850941320

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 101, 202, 404, 505, 808, 1010, 2020, 4040, 165551, 331102, 662204, 827755, 1324408, 1655510, 3311020, 6622040, 16720651, 33441302, 66882604, 83603255, 133765208, 167206510, 334413020, 668826040]

約数ペア:

[(1, 668826040), (2, 334413020), (4, 167206510), (5, 133765208), (8, 83603255), (10, 66882604), (20, 33441302), (40, 16720651), (101, 6622040), (202, 3311020), (404, 1655510), (505, 1324408), (808, 827755), (1010, 662204), (2020, 331102), (4040, 165551)]