8405240

素因数分解:

$2^3\times 5^1\times {\mathrm{210131}}^1$

素因数の和:210142

約数の個数: 16

約数和(自身を含む): 18911880

約数和(自身を除く): 10506640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 210131, 420262, 840524, 1050655, 1681048, 2101310, 4202620, 8405240]

約数ペア:

[(1, 8405240), (2, 4202620), (4, 2101310), (5, 1681048), (8, 1050655), (10, 840524), (20, 420262), (40, 210131)]