21540728

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{244781}}^1$

素因数の和:244798

約数の個数: 16

約数和(自身を含む): 44060760

約数和(自身を除く): 22520032

約数列:

[1, 2, 4, 8, 11, 22, 44, 88, 244781, 489562, 979124, 1958248, 2692591, 5385182, 10770364, 21540728]

約数ペア:

[(1, 21540728), (2, 10770364), (4, 5385182), (8, 2692591), (11, 1958248), (22, 979124), (44, 489562), (88, 244781)]