21257029

素因数分解:

${\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{173}}^1\times {\mathrm{223}}^1$

素因数の和:444

約数の個数: 16

約数和(自身を含む): 23385600

約数和(自身を除く): 2128571

約数列:

[1, 19, 29, 173, 223, 551, 3287, 4237, 5017, 6467, 38579, 95323, 122873, 733001, 1118791, 21257029]

約数ペア:

[(1, 21257029), (19, 1118791), (29, 733001), (173, 122873), (223, 95323), (551, 38579), (3287, 6467), (4237, 5017)]