21071313

素因数分解:

$3^3\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{1583}}^1$

素因数の和:1638

約数の個数: 32

約数和(自身を含む): 34214400

約数和(自身を除く): 13143087

約数列:

[1, 3, 9, 17, 27, 29, 51, 87, 153, 261, 459, 493, 783, 1479, 1583, 4437, 4749, 13311, 14247, 26911, 42741, 45907, 80733, 137721, 242199, 413163, 726597, 780419, 1239489, 2341257, 7023771, 21071313]

約数ペア:

[(1, 21071313), (3, 7023771), (9, 2341257), (17, 1239489), (27, 780419), (29, 726597), (51, 413163), (87, 242199), (153, 137721), (261, 80733), (459, 45907), (493, 42741), (783, 26911), (1479, 14247), (1583, 13311), (4437, 4749)]