21742565

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{167}}^1\times {\mathrm{2003}}^1$

素因数の和:2188

約数の個数: 16

約数和(自身を含む): 28280448

約数和(自身を除く): 6537883

約数列:

[1, 5, 13, 65, 167, 835, 2003, 2171, 10015, 10855, 26039, 130195, 334501, 1672505, 4348513, 21742565]

約数ペア:

[(1, 21742565), (5, 4348513), (13, 1672505), (65, 334501), (167, 130195), (835, 26039), (2003, 10855), (2171, 10015)]