258456878

素因数分解:

$2^1\times {\mathrm{61}}^1\times {\mathrm{139}}^1\times {\mathrm{15241}}^1$

素因数の和:15443

約数の個数: 16

約数和(自身を含む): 396901680

約数和(自身を除く): 138444802

約数列:

[1, 2, 61, 122, 139, 278, 8479, 15241, 16958, 30482, 929701, 1859402, 2118499, 4236998, 129228439, 258456878]

約数ペア:

[(1, 258456878), (2, 129228439), (61, 4236998), (122, 2118499), (139, 1859402), (278, 929701), (8479, 30482), (15241, 16958)]