531316400

素因数分解:

$2^4\times 5^2\times {\mathrm{647}}^1\times {\mathrm{2053}}^1$

素因数の和:2718

約数の個数: 60

約数和(自身を含む): 1279083312

約数和(自身を除く): 747766912

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 647, 1294, 2053, 2588, 3235, 4106, 5176, 6470, 8212, 10265, 10352, 12940, 16175, 16424, 20530, 25880, 32350, 32848, 41060, 51325, 51760, 64700, 82120, 102650, 129400, 164240, 205300, 258800, 410600, 821200, 1328291, 2656582, 5313164, 6641455, 10626328, 13282910, 21252656, 26565820, 33207275, 53131640, 66414550, 106263280, 132829100, 265658200, 531316400]

約数ペア:

[(1, 531316400), (2, 265658200), (4, 132829100), (5, 106263280), (8, 66414550), (10, 53131640), (16, 33207275), (20, 26565820), (25, 21252656), (40, 13282910), (50, 10626328), (80, 6641455), (100, 5313164), (200, 2656582), (400, 1328291), (647, 821200), (1294, 410600), (2053, 258800), (2588, 205300), (3235, 164240), (4106, 129400), (5176, 102650), (6470, 82120), (8212, 64700), (10265, 51760), (10352, 51325), (12940, 41060), (16175, 32848), (16424, 32350), (20530, 25880)]