8320840

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{18911}}^1$

素因数の和:18933

約数の個数: 32

約数和(自身を含む): 20424960

約数和(自身を除く): 12104120

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 18911, 37822, 75644, 94555, 151288, 189110, 208021, 378220, 416042, 756440, 832084, 1040105, 1664168, 2080210, 4160420, 8320840]

約数ペア:

[(1, 8320840), (2, 4160420), (4, 2080210), (5, 1664168), (8, 1040105), (10, 832084), (11, 756440), (20, 416042), (22, 378220), (40, 208021), (44, 189110), (55, 151288), (88, 94555), (110, 75644), (220, 37822), (440, 18911)]