81420157

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{52631}}^1$

素因数の和:52668

約数の個数: 16

約数和(自身を含む): 106106112

約数和(自身を除く): 24685955

約数列:

[1, 7, 13, 17, 91, 119, 221, 1547, 52631, 368417, 684203, 894727, 4789421, 6263089, 11631451, 81420157]

約数ペア:

[(1, 81420157), (7, 11631451), (13, 6263089), (17, 4789421), (91, 894727), (119, 684203), (221, 368417), (1547, 52631)]