257115728

素因数分解:

$2^4\times {\mathrm{313}}^1\times {\mathrm{51341}}^1$

素因数の和:51662

約数の個数: 20

約数和(自身を含む): 499763028

約数和(自身を除く): 242647300

約数列:

[1, 2, 4, 8, 16, 313, 626, 1252, 2504, 5008, 51341, 102682, 205364, 410728, 821456, 16069733, 32139466, 64278932, 128557864, 257115728]

約数ペア:

[(1, 257115728), (2, 128557864), (4, 64278932), (8, 32139466), (16, 16069733), (313, 821456), (626, 410728), (1252, 205364), (2504, 102682), (5008, 51341)]