20817445

素因数分解:

$5^1\times {\mathrm{11}}^2\times {\mathrm{19}}^1\times {\mathrm{1811}}^1$

素因数の和:1857

約数の個数: 24

約数和(自身を含む): 28919520

約数和(自身を除く): 8102075

約数列:

[1, 5, 11, 19, 55, 95, 121, 209, 605, 1045, 1811, 2299, 9055, 11495, 19921, 34409, 99605, 172045, 219131, 378499, 1095655, 1892495, 4163489, 20817445]

約数ペア:

[(1, 20817445), (5, 4163489), (11, 1892495), (19, 1095655), (55, 378499), (95, 219131), (121, 172045), (209, 99605), (605, 34409), (1045, 19921), (1811, 11495), (2299, 9055)]