20873980

素因数分解:

$2^2\times 5^1\times {\mathrm{103}}^1\times {\mathrm{10133}}^1$

素因数の和:10245

約数の個数: 24

約数和(自身を含む): 44265312

約数和(自身を除く): 23391332

約数列:

[1, 2, 4, 5, 10, 20, 103, 206, 412, 515, 1030, 2060, 10133, 20266, 40532, 50665, 101330, 202660, 1043699, 2087398, 4174796, 5218495, 10436990, 20873980]

約数ペア:

[(1, 20873980), (2, 10436990), (4, 5218495), (5, 4174796), (10, 2087398), (20, 1043699), (103, 202660), (206, 101330), (412, 50665), (515, 40532), (1030, 20266), (2060, 10133)]