90820400

素因数分解:

$2^4\times 5^2\times {\mathrm{11}}^1\times {\mathrm{20641}}^1$

素因数の和:20670

約数の個数: 60

約数和(自身を含む): 238043544

約数和(自身を除く): 147223144

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 25, 40, 44, 50, 55, 80, 88, 100, 110, 176, 200, 220, 275, 400, 440, 550, 880, 1100, 2200, 4400, 20641, 41282, 82564, 103205, 165128, 206410, 227051, 330256, 412820, 454102, 516025, 825640, 908204, 1032050, 1135255, 1651280, 1816408, 2064100, 2270510, 3632816, 4128200, 4541020, 5676275, 8256400, 9082040, 11352550, 18164080, 22705100, 45410200, 90820400]

約数ペア:

[(1, 90820400), (2, 45410200), (4, 22705100), (5, 18164080), (8, 11352550), (10, 9082040), (11, 8256400), (16, 5676275), (20, 4541020), (22, 4128200), (25, 3632816), (40, 2270510), (44, 2064100), (50, 1816408), (55, 1651280), (80, 1135255), (88, 1032050), (100, 908204), (110, 825640), (176, 516025), (200, 454102), (220, 412820), (275, 330256), (400, 227051), (440, 206410), (550, 165128), (880, 103205), (1100, 82564), (2200, 41282), (4400, 20641)]