81768388

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{101}}^1\times {\mathrm{15569}}^1$

素因数の和:15687

約数の個数: 24

約数和(自身を含む): 155637720

約数和(自身を除く): 73869332

約数列:

[1, 2, 4, 13, 26, 52, 101, 202, 404, 1313, 2626, 5252, 15569, 31138, 62276, 202397, 404794, 809588, 1572469, 3144938, 6289876, 20442097, 40884194, 81768388]

約数ペア:

[(1, 81768388), (2, 40884194), (4, 20442097), (13, 6289876), (26, 3144938), (52, 1572469), (101, 809588), (202, 404794), (404, 202397), (1313, 62276), (2626, 31138), (5252, 15569)]