20400017

素因数分解:

${\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{43}}^2\times {\mathrm{59}}^1$

素因数の和:173

約数の個数: 24

約数和(自身を含む): 24533280

約数和(自身を除く): 4133263

約数列:

[1, 11, 17, 43, 59, 187, 473, 649, 731, 1003, 1849, 2537, 8041, 11033, 20339, 27907, 31433, 43129, 109091, 345763, 474419, 1200001, 1854547, 20400017]

約数ペア:

[(1, 20400017), (11, 1854547), (17, 1200001), (43, 474419), (59, 345763), (187, 109091), (473, 43129), (649, 31433), (731, 27907), (1003, 20339), (1849, 11033), (2537, 8041)]