81688660

素因数分解:

$2^2\times 5^1\times {\mathrm{479}}^1\times {\mathrm{8527}}^1$

素因数の和:9015

約数の個数: 24

約数和(自身を含む): 171924480

約数和(自身を除く): 90235820

約数列:

[1, 2, 4, 5, 10, 20, 479, 958, 1916, 2395, 4790, 8527, 9580, 17054, 34108, 42635, 85270, 170540, 4084433, 8168866, 16337732, 20422165, 40844330, 81688660]

約数ペア:

[(1, 81688660), (2, 40844330), (4, 20422165), (5, 16337732), (10, 8168866), (20, 4084433), (479, 170540), (958, 85270), (1916, 42635), (2395, 34108), (4790, 17054), (8527, 9580)]