8040050

素因数分解:

$2^1\times 5^2\times {\mathrm{401}}^2$

素因数の和:814

約数の個数: 18

約数和(自身を含む): 14991879

約数和(自身を除く): 6951829

約数列:

[1, 2, 5, 10, 25, 50, 401, 802, 2005, 4010, 10025, 20050, 160801, 321602, 804005, 1608010, 4020025, 8040050]

約数ペア:

[(1, 8040050), (2, 4020025), (5, 1608010), (10, 804005), (25, 321602), (50, 160801), (401, 20050), (802, 10025), (2005, 4010)]