21890493

素因数分解:

$3^4\times {\mathrm{131}}^1\times {\mathrm{2063}}^1$

素因数の和:2206

約数の個数: 20

約数和(自身を含む): 32966208

約数和(自身を除く): 11075715

約数列:

[1, 3, 9, 27, 81, 131, 393, 1179, 2063, 3537, 6189, 10611, 18567, 55701, 167103, 270253, 810759, 2432277, 7296831, 21890493]

約数ペア:

[(1, 21890493), (3, 7296831), (9, 2432277), (27, 810759), (81, 270253), (131, 167103), (393, 55701), (1179, 18567), (2063, 10611), (3537, 6189)]