8405020

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{32327}}^1$

素因数の和:32349

約数の個数: 24

約数和(自身を含む): 19008864

約数和(自身を除く): 10603844

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 32327, 64654, 129308, 161635, 323270, 420251, 646540, 840502, 1681004, 2101255, 4202510, 8405020]

約数ペア:

[(1, 8405020), (2, 4202510), (4, 2101255), (5, 1681004), (10, 840502), (13, 646540), (20, 420251), (26, 323270), (52, 161635), (65, 129308), (130, 64654), (260, 32327)]