19998982085

素因数分解:

$5^1\times {\mathrm{389}}^1\times {\mathrm{1259}}^1\times {\mathrm{8167}}^1$

素因数の和:9820

約数の個数: 16

約数和(自身を含む): 24082531200

約数和(自身を除く): 4083549115

約数列:

[1, 5, 389, 1259, 1945, 6295, 8167, 40835, 489751, 2448755, 3176963, 10282253, 15884815, 51411265, 3999796417, 19998982085]

約数ペア:

[(1, 19998982085), (5, 3999796417), (389, 51411265), (1259, 15884815), (1945, 10282253), (6295, 3176963), (8167, 2448755), (40835, 489751)]