21390777

素因数分解:

$3^3\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{1607}}^1$

素因数の和:1662

約数の個数: 32

約数和(自身を含む): 34732800

約数和(自身を除く): 13342023

約数列:

[1, 3, 9, 17, 27, 29, 51, 87, 153, 261, 459, 493, 783, 1479, 1607, 4437, 4821, 13311, 14463, 27319, 43389, 46603, 81957, 139809, 245871, 419427, 737613, 792251, 1258281, 2376753, 7130259, 21390777]

約数ペア:

[(1, 21390777), (3, 7130259), (9, 2376753), (17, 1258281), (27, 792251), (29, 737613), (51, 419427), (87, 245871), (153, 139809), (261, 81957), (459, 46603), (493, 43389), (783, 27319), (1479, 14463), (1607, 13311), (4437, 4821)]