2157500020

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{8298077}}^1$

素因数の和:8298099

約数の個数: 24

約数和(自身を含む): 4879269864

約数和(自身を除く): 2721769844

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 8298077, 16596154, 33192308, 41490385, 82980770, 107875001, 165961540, 215750002, 431500004, 539375005, 1078750010, 2157500020]

約数ペア:

[(1, 2157500020), (2, 1078750010), (4, 539375005), (5, 431500004), (10, 215750002), (13, 165961540), (20, 107875001), (26, 82980770), (52, 41490385), (65, 33192308), (130, 16596154), (260, 8298077)]