809020

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{2129}}^1$

素因数の和:2157

約数の個数: 24

約数和(自身を含む): 1789200

約数和(自身を除く): 980180

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 380, 2129, 4258, 8516, 10645, 21290, 40451, 42580, 80902, 161804, 202255, 404510, 809020]

約数ペア:

[(1, 809020), (2, 404510), (4, 202255), (5, 161804), (10, 80902), (19, 42580), (20, 40451), (38, 21290), (76, 10645), (95, 8516), (190, 4258), (380, 2129)]