87122180

素因数分解:

$2^2\times 5^1\times {\mathrm{4356109}}^1$

素因数の和:4356118

約数の個数: 12

約数和(自身を含む): 182956620

約数和(自身を除く): 95834440

約数列:

[1, 2, 4, 5, 10, 20, 4356109, 8712218, 17424436, 21780545, 43561090, 87122180]

約数ペア:

[(1, 87122180), (2, 43561090), (4, 21780545), (5, 17424436), (10, 8712218), (20, 4356109)]