21311421

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{103}}^1\times {\mathrm{4057}}^1$

素因数の和:4180

約数の個数: 16

約数和(自身を含む): 30386304

約数和(自身を除く): 9074883

約数列:

[1, 3, 17, 51, 103, 309, 1751, 4057, 5253, 12171, 68969, 206907, 417871, 1253613, 7103807, 21311421]

約数ペア:

[(1, 21311421), (3, 7103807), (17, 1253613), (51, 417871), (103, 206907), (309, 68969), (1751, 12171), (4057, 5253)]