20999253

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{73}}^1\times {\mathrm{379}}^1$

素因数の和:489

約数の個数: 32

約数和(自身を含む): 32394240

約数和(自身を除く): 11394987

約数列:

[1, 3, 11, 23, 33, 69, 73, 219, 253, 379, 759, 803, 1137, 1679, 2409, 4169, 5037, 8717, 12507, 18469, 26151, 27667, 55407, 83001, 95887, 287661, 304337, 636341, 913011, 1909023, 6999751, 20999253]

約数ペア:

[(1, 20999253), (3, 6999751), (11, 1909023), (23, 913011), (33, 636341), (69, 304337), (73, 287661), (219, 95887), (253, 83001), (379, 55407), (759, 27667), (803, 26151), (1137, 18469), (1679, 12507), (2409, 8717), (4169, 5037)]