1981940

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{2417}}^1$

素因数の和:2467

約数の個数: 24

約数和(自身を含む): 4265352

約数和(自身を除く): 2283412

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 2417, 4834, 9668, 12085, 24170, 48340, 99097, 198194, 396388, 495485, 990970, 1981940]

約数ペア:

[(1, 1981940), (2, 990970), (4, 495485), (5, 396388), (10, 198194), (20, 99097), (41, 48340), (82, 24170), (164, 12085), (205, 9668), (410, 4834), (820, 2417)]