25889305

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{20963}}^1$

素因数の和:21000

約数の個数: 16

約数和(自身を含む): 35219520

約数和(自身を除く): 9330215

約数列:

[1, 5, 13, 19, 65, 95, 247, 1235, 20963, 104815, 272519, 398297, 1362595, 1991485, 5177861, 25889305]

約数ペア:

[(1, 25889305), (5, 5177861), (13, 1991485), (19, 1362595), (65, 398297), (95, 272519), (247, 104815), (1235, 20963)]