21908529

素因数分解:

$3^3\times {\mathrm{17}}^1\times {\mathrm{59}}^1\times {\mathrm{809}}^1$

素因数の和:894

約数の個数: 32

約数和(自身を含む): 34992000

約数和(自身を除く): 13083471

約数列:

[1, 3, 9, 17, 27, 51, 59, 153, 177, 459, 531, 809, 1003, 1593, 2427, 3009, 7281, 9027, 13753, 21843, 27081, 41259, 47731, 123777, 143193, 371331, 429579, 811427, 1288737, 2434281, 7302843, 21908529]

約数ペア:

[(1, 21908529), (3, 7302843), (9, 2434281), (17, 1288737), (27, 811427), (51, 429579), (59, 371331), (153, 143193), (177, 123777), (459, 47731), (531, 41259), (809, 27081), (1003, 21843), (1593, 13753), (2427, 9027), (3009, 7281)]