20822828

素因数分解:

$2^2\times {\mathrm{13}}^2\times {\mathrm{30803}}^1$

素因数の和:30833

約数の個数: 18

約数和(自身を含む): 39459924

約数和(自身を除く): 18637096

約数列:

[1, 2, 4, 13, 26, 52, 169, 338, 676, 30803, 61606, 123212, 400439, 800878, 1601756, 5205707, 10411414, 20822828]

約数ペア:

[(1, 20822828), (2, 10411414), (4, 5205707), (13, 1601756), (26, 800878), (52, 400439), (169, 123212), (338, 61606), (676, 30803)]