21190967

素因数分解:

$7^1\times {\mathrm{29}}^1\times {\mathrm{139}}^1\times {\mathrm{751}}^1$

素因数の和:926

約数の個数: 16

約数和(自身を含む): 25267200

約数和(自身を除く): 4076233

約数列:

[1, 7, 29, 139, 203, 751, 973, 4031, 5257, 21779, 28217, 104389, 152453, 730723, 3027281, 21190967]

約数ペア:

[(1, 21190967), (7, 3027281), (29, 730723), (139, 152453), (203, 104389), (751, 28217), (973, 21779), (4031, 5257)]