20557593

素因数分解:

$3^2\times 7^1\times {\mathrm{151}}^1\times {\mathrm{2161}}^1$

素因数の和:2325

約数の個数: 24

約数和(自身を含む): 34176896

約数和(自身を除く): 13619303

約数列:

[1, 3, 7, 9, 21, 63, 151, 453, 1057, 1359, 2161, 3171, 6483, 9513, 15127, 19449, 45381, 136143, 326311, 978933, 2284177, 2936799, 6852531, 20557593]

約数ペア:

[(1, 20557593), (3, 6852531), (7, 2936799), (9, 2284177), (21, 978933), (63, 326311), (151, 136143), (453, 45381), (1057, 19449), (1359, 15127), (2161, 9513), (3171, 6483)]