20001916

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{499}}^1\times {\mathrm{911}}^1$

素因数の和:1425

約数の個数: 24

約数和(自身を含む): 38304000

約数和(自身を除く): 18302084

約数列:

[1, 2, 4, 11, 22, 44, 499, 911, 998, 1822, 1996, 3644, 5489, 10021, 10978, 20042, 21956, 40084, 454589, 909178, 1818356, 5000479, 10000958, 20001916]

約数ペア:

[(1, 20001916), (2, 10000958), (4, 5000479), (11, 1818356), (22, 909178), (44, 454589), (499, 40084), (911, 21956), (998, 20042), (1822, 10978), (1996, 10021), (3644, 5489)]