18819905

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{139}}^1\times {\mathrm{2083}}^1$

素因数の和:2240

約数の個数: 16

約数和(自身を含む): 24507840

約数和(自身を除く): 5687935

約数列:

[1, 5, 13, 65, 139, 695, 1807, 2083, 9035, 10415, 27079, 135395, 289537, 1447685, 3763981, 18819905]

約数ペア:

[(1, 18819905), (5, 3763981), (13, 1447685), (65, 289537), (139, 135395), (695, 27079), (1807, 10415), (2083, 9035)]