81739160

素因数分解:

$2^3\times 5^1\times {\mathrm{2043479}}^1$

素因数の和:2043490

約数の個数: 16

約数和(自身を含む): 183913200

約数和(自身を除く): 102174040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 2043479, 4086958, 8173916, 10217395, 16347832, 20434790, 40869580, 81739160]

約数ペア:

[(1, 81739160), (2, 40869580), (4, 20434790), (5, 16347832), (8, 10217395), (10, 8173916), (20, 4086958), (40, 2043479)]