21129548

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{20879}}^1$

素因数の和:20917

約数の個数: 24

約数和(自身を含む): 42094080

約数和(自身を除く): 20964532

約数列:

[1, 2, 4, 11, 22, 23, 44, 46, 92, 253, 506, 1012, 20879, 41758, 83516, 229669, 459338, 480217, 918676, 960434, 1920868, 5282387, 10564774, 21129548]

約数ペア:

[(1, 21129548), (2, 10564774), (4, 5282387), (11, 1920868), (22, 960434), (23, 918676), (44, 480217), (46, 459338), (92, 229669), (253, 83516), (506, 41758), (1012, 20879)]