3216020

素因数分解:

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

素因数の和:811

約数の個数: 18

約数和(自身を含む): 6770526

約数和(自身を除く): 3554506

約数列:

[1, 2, 4, 5, 10, 20, 401, 802, 1604, 2005, 4010, 8020, 160801, 321602, 643204, 804005, 1608010, 3216020]

約数ペア:

[(1, 3216020), (2, 1608010), (4, 804005), (5, 643204), (10, 321602), (20, 160801), (401, 8020), (802, 4010), (1604, 2005)]