8401478920

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{5122853}}^1$

素因数の和:5122905

約数の個数: 32

約数和(自身を含む): 19364388120

約数和(自身を除く): 10962909200

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 820, 1640, 5122853, 10245706, 20491412, 25614265, 40982824, 51228530, 102457060, 204914120, 210036973, 420073946, 840147892, 1050184865, 1680295784, 2100369730, 4200739460, 8401478920]

約数ペア:

[(1, 8401478920), (2, 4200739460), (4, 2100369730), (5, 1680295784), (8, 1050184865), (10, 840147892), (20, 420073946), (40, 210036973), (41, 204914120), (82, 102457060), (164, 51228530), (205, 40982824), (328, 25614265), (410, 20491412), (820, 10245706), (1640, 5122853)]