87120484

素因数分解:

$2^2\times {\mathrm{11}}^2\times {\mathrm{180001}}^1$

素因数の和:180027

約数の個数: 18

約数和(自身を含む): 167581862

約数和(自身を除く): 80461378

約数列:

[1, 2, 4, 11, 22, 44, 121, 242, 484, 180001, 360002, 720004, 1980011, 3960022, 7920044, 21780121, 43560242, 87120484]

約数ペア:

[(1, 87120484), (2, 43560242), (4, 21780121), (11, 7920044), (22, 3960022), (44, 1980011), (121, 720004), (242, 360002), (484, 180001)]