17921605

素因数分解:

$5^1\times {\mathrm{13}}^2\times {\mathrm{127}}^1\times {\mathrm{167}}^1$

素因数の和:325

約数の個数: 24

約数和(自身を含む): 23611392

約数和(自身を除く): 5689787

約数列:

[1, 5, 13, 65, 127, 167, 169, 635, 835, 845, 1651, 2171, 8255, 10855, 21209, 21463, 28223, 106045, 107315, 141115, 275717, 1378585, 3584321, 17921605]

約数ペア:

[(1, 17921605), (5, 3584321), (13, 1378585), (65, 275717), (127, 141115), (167, 107315), (169, 106045), (635, 28223), (835, 21463), (845, 21209), (1651, 10855), (2171, 8255)]