81668120

素因数分解:

$2^3\times 5^1\times {\mathrm{2041703}}^1$

素因数の和:2041714

約数の個数: 16

約数和(自身を含む): 183753360

約数和(自身を除く): 102085240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 2041703, 4083406, 8166812, 10208515, 16333624, 20417030, 40834060, 81668120]

約数ペア:

[(1, 81668120), (2, 40834060), (4, 20417030), (5, 16333624), (8, 10208515), (10, 8166812), (20, 4083406), (40, 2041703)]