21678085

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{30319}}^1$

素因数の和:30348

約数の個数: 16

約数和(自身を含む): 30562560

約数和(自身を除く): 8884475

約数列:

[1, 5, 11, 13, 55, 65, 143, 715, 30319, 151595, 333509, 394147, 1667545, 1970735, 4335617, 21678085]

約数ペア:

[(1, 21678085), (5, 4335617), (11, 1970735), (13, 1667545), (55, 394147), (65, 333509), (143, 151595), (715, 30319)]