81317548

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{647}}^1\times {\mathrm{2417}}^1$

素因数の和:3081

約数の個数: 24

約数和(自身を含む): 153552672

約数和(自身を除く): 72235124

約数列:

[1, 2, 4, 13, 26, 52, 647, 1294, 2417, 2588, 4834, 8411, 9668, 16822, 31421, 33644, 62842, 125684, 1563799, 3127598, 6255196, 20329387, 40658774, 81317548]

約数ペア:

[(1, 81317548), (2, 40658774), (4, 20329387), (13, 6255196), (26, 3127598), (52, 1563799), (647, 125684), (1294, 62842), (2417, 33644), (2588, 31421), (4834, 16822), (8411, 9668)]