21250901

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{4153}}^1$

素因数の和:4220

約数の個数: 16

約数和(自身を含む): 26319744

約数和(自身を除く): 5068843

約数列:

[1, 7, 17, 43, 119, 301, 731, 4153, 5117, 29071, 70601, 178579, 494207, 1250053, 3035843, 21250901]

約数ペア:

[(1, 21250901), (7, 3035843), (17, 1250053), (43, 494207), (119, 178579), (301, 70601), (731, 29071), (4153, 5117)]