20947077

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{4721}}^1$

素因数の和:4773

約数の個数: 24

約数和(自身を含む): 33148440

約数和(自身を除く): 12201363

約数列:

[1, 3, 9, 17, 29, 51, 87, 153, 261, 493, 1479, 4437, 4721, 14163, 42489, 80257, 136909, 240771, 410727, 722313, 1232181, 2327453, 6982359, 20947077]

約数ペア:

[(1, 20947077), (3, 6982359), (9, 2327453), (17, 1232181), (29, 722313), (51, 410727), (87, 240771), (153, 136909), (261, 80257), (493, 42489), (1479, 14163), (4437, 4721)]