20157891

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{349}}^1\times {\mathrm{1481}}^1$

素因数の和:1846

約数の個数: 16

約数和(自身を含む): 29047200

約数和(自身を除く): 8889309

約数列:

[1, 3, 13, 39, 349, 1047, 1481, 4443, 4537, 13611, 19253, 57759, 516869, 1550607, 6719297, 20157891]

約数ペア:

[(1, 20157891), (3, 6719297), (13, 1550607), (39, 516869), (349, 57759), (1047, 19253), (1481, 13611), (4443, 4537)]