18782660

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{5557}}^1$

素因数の和:5592

約数の個数: 36

約数和(自身を含む): 42718788

約数和(自身を除く): 23936128

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 169, 260, 338, 676, 845, 1690, 3380, 5557, 11114, 22228, 27785, 55570, 72241, 111140, 144482, 288964, 361205, 722410, 939133, 1444820, 1878266, 3756532, 4695665, 9391330, 18782660]

約数ペア:

[(1, 18782660), (2, 9391330), (4, 4695665), (5, 3756532), (10, 1878266), (13, 1444820), (20, 939133), (26, 722410), (52, 361205), (65, 288964), (130, 144482), (169, 111140), (260, 72241), (338, 55570), (676, 27785), (845, 22228), (1690, 11114), (3380, 5557)]