20679868

素因数分解:

$2^2\times {\mathrm{11}}^2\times {\mathrm{42727}}^1$

素因数の和:42753

約数の個数: 18

約数和(自身を含む): 39779768

約数和(自身を除く): 19099900

約数列:

[1, 2, 4, 11, 22, 44, 121, 242, 484, 42727, 85454, 170908, 469997, 939994, 1879988, 5169967, 10339934, 20679868]

約数ペア:

[(1, 20679868), (2, 10339934), (4, 5169967), (11, 1879988), (22, 939994), (44, 469997), (121, 170908), (242, 85454), (484, 42727)]