8003920

素因数分解:

$2^4\times 5^1\times {\mathrm{100049}}^1$

素因数の和:100062

約数の個数: 20

約数和(自身を含む): 18609300

約数和(自身を除く): 10605380

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 100049, 200098, 400196, 500245, 800392, 1000490, 1600784, 2000980, 4001960, 8003920]

約数ペア:

[(1, 8003920), (2, 4001960), (4, 2000980), (5, 1600784), (8, 1000490), (10, 800392), (16, 500245), (20, 400196), (40, 200098), (80, 100049)]