257922728

素因数分解:

$2^3\times 7^1\times {\mathrm{31}}^1\times {\mathrm{148573}}^1$

素因数の和:148617

約数の個数: 32

約数和(自身を含む): 570524160

約数和(自身を除く): 312601432

約数列:

[1, 2, 4, 7, 8, 14, 28, 31, 56, 62, 124, 217, 248, 434, 868, 1736, 148573, 297146, 594292, 1040011, 1188584, 2080022, 4160044, 4605763, 8320088, 9211526, 18423052, 32240341, 36846104, 64480682, 128961364, 257922728]

約数ペア:

[(1, 257922728), (2, 128961364), (4, 64480682), (7, 36846104), (8, 32240341), (14, 18423052), (28, 9211526), (31, 8320088), (56, 4605763), (62, 4160044), (124, 2080022), (217, 1188584), (248, 1040011), (434, 594292), (868, 297146), (1736, 148573)]