21868239

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{103}}^1\times {\mathrm{181}}^1$

素因数の和:327

約数の個数: 32

約数和(自身を含む): 32707584

約数和(自身を除く): 10839345

約数列:

[1, 3, 17, 23, 51, 69, 103, 181, 309, 391, 543, 1173, 1751, 2369, 3077, 4163, 5253, 7107, 9231, 12489, 18643, 40273, 55929, 70771, 120819, 212313, 316931, 428789, 950793, 1286367, 7289413, 21868239]

約数ペア:

[(1, 21868239), (3, 7289413), (17, 1286367), (23, 950793), (51, 428789), (69, 316931), (103, 212313), (181, 120819), (309, 70771), (391, 55929), (543, 40273), (1173, 18643), (1751, 12489), (2369, 9231), (3077, 7107), (4163, 5253)]