20423205

素因数分解:

$3^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{809}}^1$

素因数の和:851

約数の個数: 64

約数和(自身を含む): 41990400

約数和(自身を除く): 21567195

約数列:

[1, 3, 5, 9, 11, 15, 17, 27, 33, 45, 51, 55, 85, 99, 135, 153, 165, 187, 255, 297, 459, 495, 561, 765, 809, 935, 1485, 1683, 2295, 2427, 2805, 4045, 5049, 7281, 8415, 8899, 12135, 13753, 21843, 25245, 26697, 36405, 41259, 44495, 68765, 80091, 109215, 123777, 133485, 151283, 206295, 240273, 371331, 400455, 453849, 618885, 756415, 1201365, 1361547, 1856655, 2269245, 4084641, 6807735, 20423205]

約数ペア:

[(1, 20423205), (3, 6807735), (5, 4084641), (9, 2269245), (11, 1856655), (15, 1361547), (17, 1201365), (27, 756415), (33, 618885), (45, 453849), (51, 400455), (55, 371331), (85, 240273), (99, 206295), (135, 151283), (153, 133485), (165, 123777), (187, 109215), (255, 80091), (297, 68765), (459, 44495), (495, 41259), (561, 36405), (765, 26697), (809, 25245), (935, 21843), (1485, 13753), (1683, 12135), (2295, 8899), (2427, 8415), (2805, 7281), (4045, 5049)]