21086828

素因数分解:

$2^2\times 7^1\times {\mathrm{29}}^1\times {\mathrm{25969}}^1$

素因数の和:26009

約数の個数: 24

約数和(自身を含む): 43629600

約数和(自身を除く): 22542772

約数列:

[1, 2, 4, 7, 14, 28, 29, 58, 116, 203, 406, 812, 25969, 51938, 103876, 181783, 363566, 727132, 753101, 1506202, 3012404, 5271707, 10543414, 21086828]

約数ペア:

[(1, 21086828), (2, 10543414), (4, 5271707), (7, 3012404), (14, 1506202), (28, 753101), (29, 727132), (58, 363566), (116, 181783), (203, 103876), (406, 51938), (812, 25969)]