90102920

素因数分解:

$2^3\times 5^1\times {\mathrm{311}}^1\times {\mathrm{7243}}^1$

素因数の和:7565

約数の個数: 32

約数和(自身を含む): 203411520

約数和(自身を除く): 113308600

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 311, 622, 1244, 1555, 2488, 3110, 6220, 7243, 12440, 14486, 28972, 36215, 57944, 72430, 144860, 289720, 2252573, 4505146, 9010292, 11262865, 18020584, 22525730, 45051460, 90102920]

約数ペア:

[(1, 90102920), (2, 45051460), (4, 22525730), (5, 18020584), (8, 11262865), (10, 9010292), (20, 4505146), (40, 2252573), (311, 289720), (622, 144860), (1244, 72430), (1555, 57944), (2488, 36215), (3110, 28972), (6220, 14486), (7243, 12440)]