268781648

素因数分解:

$2^4\times {\mathrm{43}}^1\times {\mathrm{390671}}^1$

素因数の和:390722

約数の個数: 20

約数和(自身を含む): 532876608

約数和(自身を除く): 264094960

約数列:

[1, 2, 4, 8, 16, 43, 86, 172, 344, 688, 390671, 781342, 1562684, 3125368, 6250736, 16798853, 33597706, 67195412, 134390824, 268781648]

約数ペア:

[(1, 268781648), (2, 134390824), (4, 67195412), (8, 33597706), (16, 16798853), (43, 6250736), (86, 3125368), (172, 1562684), (344, 781342), (688, 390671)]