8130020

素因数分解:

$2^2\times 5^1\times {\mathrm{406501}}^1$

素因数の和:406510

約数の個数: 12

約数和(自身を含む): 17073084

約数和(自身を除く): 8943064

約数列:

[1, 2, 4, 5, 10, 20, 406501, 813002, 1626004, 2032505, 4065010, 8130020]

約数ペア:

[(1, 8130020), (2, 4065010), (4, 2032505), (5, 1626004), (10, 813002), (20, 406501)]