257978924

素因数分解:

$2^2\times 7^2\times {\mathrm{79}}^1\times {\mathrm{16661}}^1$

素因数の和:16758

約数の個数: 36

約数和(自身を含む): 531851040

約数和(自身を除く): 273872116

約数列:

[1, 2, 4, 7, 14, 28, 49, 79, 98, 158, 196, 316, 553, 1106, 2212, 3871, 7742, 15484, 16661, 33322, 66644, 116627, 233254, 466508, 816389, 1316219, 1632778, 2632438, 3265556, 5264876, 9213533, 18427066, 36854132, 64494731, 128989462, 257978924]

約数ペア:

[(1, 257978924), (2, 128989462), (4, 64494731), (7, 36854132), (14, 18427066), (28, 9213533), (49, 5264876), (79, 3265556), (98, 2632438), (158, 1632778), (196, 1316219), (316, 816389), (553, 466508), (1106, 233254), (2212, 116627), (3871, 66644), (7742, 33322), (15484, 16661)]