71289100

素因数分解:

$2^2\times 5^2\times {\mathrm{712891}}^1$

素因数の和:712905

約数の個数: 18

約数和(自身を含む): 154697564

約数和(自身を除く): 83408464

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 712891, 1425782, 2851564, 3564455, 7128910, 14257820, 17822275, 35644550, 71289100]

約数ペア:

[(1, 71289100), (2, 35644550), (4, 17822275), (5, 14257820), (10, 7128910), (20, 3564455), (25, 2851564), (50, 1425782), (100, 712891)]