21420153

素因数分解:

$3^3\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{2029}}^1$

素因数の和:2078

約数の個数: 32

約数和(自身を含む): 35078400

約数和(自身を除く): 13658247

約数列:

[1, 3, 9, 17, 23, 27, 51, 69, 153, 207, 391, 459, 621, 1173, 2029, 3519, 6087, 10557, 18261, 34493, 46667, 54783, 103479, 140001, 310437, 420003, 793339, 931311, 1260009, 2380017, 7140051, 21420153]

約数ペア:

[(1, 21420153), (3, 7140051), (9, 2380017), (17, 1260009), (23, 931311), (27, 793339), (51, 420003), (69, 310437), (153, 140001), (207, 103479), (391, 54783), (459, 46667), (621, 34493), (1173, 18261), (2029, 10557), (3519, 6087)]