305641880

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{227}}^1\times {\mathrm{821}}^1$

素因数の和:1100

約数の個数: 64

約数和(自身を含む): 708432480

約数和(自身を除く): 402790600

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 227, 328, 410, 454, 820, 821, 908, 1135, 1640, 1642, 1816, 2270, 3284, 4105, 4540, 6568, 8210, 9080, 9307, 16420, 18614, 32840, 33661, 37228, 46535, 67322, 74456, 93070, 134644, 168305, 186140, 186367, 269288, 336610, 372280, 372734, 673220, 745468, 931835, 1346440, 1490936, 1863670, 3727340, 7454680, 7641047, 15282094, 30564188, 38205235, 61128376, 76410470, 152820940, 305641880]

約数ペア:

[(1, 305641880), (2, 152820940), (4, 76410470), (5, 61128376), (8, 38205235), (10, 30564188), (20, 15282094), (40, 7641047), (41, 7454680), (82, 3727340), (164, 1863670), (205, 1490936), (227, 1346440), (328, 931835), (410, 745468), (454, 673220), (820, 372734), (821, 372280), (908, 336610), (1135, 269288), (1640, 186367), (1642, 186140), (1816, 168305), (2270, 134644), (3284, 93070), (4105, 74456), (4540, 67322), (6568, 46535), (8210, 37228), (9080, 33661), (9307, 32840), (16420, 18614)]