20491108

素因数分解:

$2^2\times {\mathrm{11}}^2\times {\mathrm{42337}}^1$

素因数の和:42363

約数の個数: 18

約数和(自身を含む): 39416678

約数和(自身を除く): 18925570

約数列:

[1, 2, 4, 11, 22, 44, 121, 242, 484, 42337, 84674, 169348, 465707, 931414, 1862828, 5122777, 10245554, 20491108]

約数ペア:

[(1, 20491108), (2, 10245554), (4, 5122777), (11, 1862828), (22, 931414), (44, 465707), (121, 169348), (242, 84674), (484, 42337)]