1720840

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{3911}}^1$

素因数の和:3933

約数の個数: 32

約数和(自身を含む): 4224960

約数和(自身を除く): 2504120

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 3911, 7822, 15644, 19555, 31288, 39110, 43021, 78220, 86042, 156440, 172084, 215105, 344168, 430210, 860420, 1720840]

約数ペア:

[(1, 1720840), (2, 860420), (4, 430210), (5, 344168), (8, 215105), (10, 172084), (11, 156440), (20, 86042), (22, 78220), (40, 43021), (44, 39110), (55, 31288), (88, 19555), (110, 15644), (220, 7822), (440, 3911)]