20881731

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{569}}^1\times {\mathrm{941}}^1$

素因数の和:1526

約数の個数: 16

約数和(自身を含む): 30068640

約数和(自身を除く): 9186909

約数列:

[1, 3, 13, 39, 569, 941, 1707, 2823, 7397, 12233, 22191, 36699, 535429, 1606287, 6960577, 20881731]

約数ペア:

[(1, 20881731), (3, 6960577), (13, 1606287), (39, 535429), (569, 36699), (941, 22191), (1707, 12233), (2823, 7397)]