20408873168

素因数分解:

$2^4\times {\mathrm{47}}^1\times {\mathrm{27139459}}^1$

素因数の和:27139514

約数の個数: 20

約数和(自身を含む): 40383516480

約数和(自身を除く): 19974643312

約数列:

[1, 2, 4, 8, 16, 47, 94, 188, 376, 752, 27139459, 54278918, 108557836, 217115672, 434231344, 1275554573, 2551109146, 5102218292, 10204436584, 20408873168]

約数ペア:

[(1, 20408873168), (2, 10204436584), (4, 5102218292), (8, 2551109146), (16, 1275554573), (47, 434231344), (94, 217115672), (188, 108557836), (376, 54278918), (752, 27139459)]