256400018

素因数分解:

$2^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{1077311}}^1$

素因数の和:1077337

約数の個数: 16

約数和(自身を含む): 465398784

約数和(自身を除く): 208998766

約数列:

[1, 2, 7, 14, 17, 34, 119, 238, 1077311, 2154622, 7541177, 15082354, 18314287, 36628574, 128200009, 256400018]

約数ペア:

[(1, 256400018), (2, 128200009), (7, 36628574), (14, 18314287), (17, 15082354), (34, 7541177), (119, 2154622), (238, 1077311)]