378632020

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{19949}}^1$

素因数の和:20044

約数の個数: 48

約数和(自身を含む): 868064400

約数和(自身を除く): 489432380

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 73, 130, 146, 260, 292, 365, 730, 949, 1460, 1898, 3796, 4745, 9490, 18980, 19949, 39898, 79796, 99745, 199490, 259337, 398980, 518674, 1037348, 1296685, 1456277, 2593370, 2912554, 5186740, 5825108, 7281385, 14562770, 18931601, 29125540, 37863202, 75726404, 94658005, 189316010, 378632020]

約数ペア:

[(1, 378632020), (2, 189316010), (4, 94658005), (5, 75726404), (10, 37863202), (13, 29125540), (20, 18931601), (26, 14562770), (52, 7281385), (65, 5825108), (73, 5186740), (130, 2912554), (146, 2593370), (260, 1456277), (292, 1296685), (365, 1037348), (730, 518674), (949, 398980), (1460, 259337), (1898, 199490), (3796, 99745), (4745, 79796), (9490, 39898), (18980, 19949)]