28217139

素因数分解:

$3^1\times {\mathrm{139}}^1\times {\mathrm{157}}^1\times {\mathrm{431}}^1$

素因数の和:730

約数の個数: 16

約数和(自身を含む): 38223360

約数和(自身を除く): 10006221

約数列:

[1, 3, 139, 157, 417, 431, 471, 1293, 21823, 59909, 65469, 67667, 179727, 203001, 9405713, 28217139]

約数ペア:

[(1, 28217139), (3, 9405713), (139, 203001), (157, 179727), (417, 67667), (431, 65469), (471, 59909), (1293, 21823)]