18920105

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{79}}^1\times {\mathrm{2521}}^1$

素因数の和:2624

約数の個数: 16

約数和(自身を含む): 24211200

約数和(自身を除く): 5291095

約数列:

[1, 5, 19, 79, 95, 395, 1501, 2521, 7505, 12605, 47899, 199159, 239495, 995795, 3784021, 18920105]

約数ペア:

[(1, 18920105), (5, 3784021), (19, 995795), (79, 239495), (95, 199159), (395, 47899), (1501, 12605), (2521, 7505)]