21540167

素因数分解:

${\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{4481}}^1$

素因数の和:4534

約数の個数: 16

約数和(自身を含む): 25816320

約数和(自身を除く): 4276153

約数列:

[1, 11, 19, 23, 209, 253, 437, 4481, 4807, 49291, 85139, 103063, 936529, 1133693, 1958197, 21540167]

約数ペア:

[(1, 21540167), (11, 1958197), (19, 1133693), (23, 936529), (209, 103063), (253, 85139), (437, 49291), (4481, 4807)]