21409817

素因数分解:

${\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{8807}}^1$

素因数の和:8848

約数の個数: 16

約数和(自身を含む): 26635392

約数和(自身を除く): 5225575

約数列:

[1, 11, 13, 17, 143, 187, 221, 2431, 8807, 96877, 114491, 149719, 1259401, 1646909, 1946347, 21409817]

約数ペア:

[(1, 21409817), (11, 1946347), (13, 1646909), (17, 1259401), (143, 149719), (187, 114491), (221, 96877), (2431, 8807)]