20211793

素因数分解:

$7^1\times {\mathrm{17}}^2\times {\mathrm{97}}^1\times {\mathrm{103}}^1$

素因数の和:241

約数の個数: 24

約数和(自身を含む): 25031552

約数和(自身を除く): 4819759

約数列:

[1, 7, 17, 97, 103, 119, 289, 679, 721, 1649, 1751, 2023, 9991, 11543, 12257, 28033, 29767, 69937, 169847, 196231, 208369, 1188929, 2887399, 20211793]

約数ペア:

[(1, 20211793), (7, 2887399), (17, 1188929), (97, 208369), (103, 196231), (119, 169847), (289, 69937), (679, 29767), (721, 28033), (1649, 12257), (1751, 11543), (2023, 9991)]