219791804

素因数分解:

$2^2\times {\mathrm{139}}^1\times {\mathrm{395309}}^1$

素因数の和:395452

約数の個数: 12

約数和(自身を含む): 387403800

約数和(自身を除く): 167611996

約数列:

[1, 2, 4, 139, 278, 556, 395309, 790618, 1581236, 54947951, 109895902, 219791804]

約数ペア:

[(1, 219791804), (2, 109895902), (4, 54947951), (139, 1581236), (278, 790618), (556, 395309)]