21920578

素因数分解:

$2^1\times {\mathrm{29}}^1\times {\mathrm{139}}^1\times {\mathrm{2719}}^1$

素因数の和:2889

約数の個数: 16

約数和(自身を含む): 34272000

約数和(自身を除く): 12351422

約数列:

[1, 2, 29, 58, 139, 278, 2719, 4031, 5438, 8062, 78851, 157702, 377941, 755882, 10960289, 21920578]

約数ペア:

[(1, 21920578), (2, 10960289), (29, 755882), (58, 377941), (139, 157702), (278, 78851), (2719, 8062), (4031, 5438)]