20682040

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{12611}}^1$

素因数の和:12663

約数の個数: 32

約数和(自身を含む): 47673360

約数和(自身を除く): 26991320

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 820, 1640, 12611, 25222, 50444, 63055, 100888, 126110, 252220, 504440, 517051, 1034102, 2068204, 2585255, 4136408, 5170510, 10341020, 20682040]

約数ペア:

[(1, 20682040), (2, 10341020), (4, 5170510), (5, 4136408), (8, 2585255), (10, 2068204), (20, 1034102), (40, 517051), (41, 504440), (82, 252220), (164, 126110), (205, 100888), (328, 63055), (410, 50444), (820, 25222), (1640, 12611)]