21079664

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{69341}}^1$

素因数の和:69368

約数の個数: 20

約数和(自身を含む): 42992040

約数和(自身を除く): 21912376

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 152, 304, 69341, 138682, 277364, 554728, 1109456, 1317479, 2634958, 5269916, 10539832, 21079664]

約数ペア:

[(1, 21079664), (2, 10539832), (4, 5269916), (8, 2634958), (16, 1317479), (19, 1109456), (38, 554728), (76, 277364), (152, 138682), (304, 69341)]