257404

素因数分解:

$2^2\times 7^1\times {\mathrm{29}}^1\times {\mathrm{317}}^1$

素因数の和:357

約数の個数: 24

約数和(自身を含む): 534240

約数和(自身を除く): 276836

約数列:

[1, 2, 4, 7, 14, 28, 29, 58, 116, 203, 317, 406, 634, 812, 1268, 2219, 4438, 8876, 9193, 18386, 36772, 64351, 128702, 257404]

約数ペア:

[(1, 257404), (2, 128702), (4, 64351), (7, 36772), (14, 18386), (28, 9193), (29, 8876), (58, 4438), (116, 2219), (203, 1268), (317, 812), (406, 634)]