258728883

素因数分解:

$3^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{397433}}^1$

素因数の和:397474

約数の個数: 16

約数和(自身を含む): 406972416

約数和(自身を除く): 148243533

約数列:

[1, 3, 7, 21, 31, 93, 217, 651, 397433, 1192299, 2782031, 8346093, 12320423, 36961269, 86242961, 258728883]

約数ペア:

[(1, 258728883), (3, 86242961), (7, 36961269), (21, 12320423), (31, 8346093), (93, 2782031), (217, 1192299), (651, 397433)]