27989157

素因数分解:

$3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{78401}}^1$

素因数の和:78428

約数の個数: 16

約数和(自身を含む): 45159552

約数和(自身を除く): 17170395

約数列:

[1, 3, 7, 17, 21, 51, 119, 357, 78401, 235203, 548807, 1332817, 1646421, 3998451, 9329719, 27989157]

約数ペア:

[(1, 27989157), (3, 9329719), (7, 3998451), (17, 1646421), (21, 1332817), (51, 548807), (119, 235203), (357, 78401)]