821180

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{2161}}^1$

素因数の和:2189

約数の個数: 24

約数和(自身を含む): 1816080

約数和(自身を除く): 994900

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 380, 2161, 4322, 8644, 10805, 21610, 41059, 43220, 82118, 164236, 205295, 410590, 821180]

約数ペア:

[(1, 821180), (2, 410590), (4, 205295), (5, 164236), (10, 82118), (19, 43220), (20, 41059), (38, 21610), (76, 10805), (95, 8644), (190, 4322), (380, 2161)]