21670239

素因数分解:

$3^1\times {\mathrm{139}}^1\times {\mathrm{157}}^1\times {\mathrm{331}}^1$

素因数の和:630

約数の個数: 16

約数和(自身を含む): 29375360

約数和(自身を除く): 7705121

約数列:

[1, 3, 139, 157, 331, 417, 471, 993, 21823, 46009, 51967, 65469, 138027, 155901, 7223413, 21670239]

約数ペア:

[(1, 21670239), (3, 7223413), (139, 155901), (157, 138027), (331, 65469), (417, 51967), (471, 46009), (993, 21823)]