209655985

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{103}}^1\times {\mathrm{311}}^1$

素因数の和:454

約数の個数: 64

約数和(自身を含む): 336420864

約数和(自身を除く): 126764879

約数列:

[1, 5, 7, 11, 17, 35, 55, 77, 85, 103, 119, 187, 311, 385, 515, 595, 721, 935, 1133, 1309, 1555, 1751, 2177, 3421, 3605, 5287, 5665, 6545, 7931, 8755, 10885, 12257, 17105, 19261, 23947, 26435, 32033, 37009, 39655, 58157, 61285, 96305, 119735, 134827, 160165, 185045, 224231, 290785, 352363, 407099, 544561, 674135, 1121155, 1761815, 2035495, 2466541, 2722805, 3811927, 5990171, 12332705, 19059635, 29950855, 41931197, 209655985]

約数ペア:

[(1, 209655985), (5, 41931197), (7, 29950855), (11, 19059635), (17, 12332705), (35, 5990171), (55, 3811927), (77, 2722805), (85, 2466541), (103, 2035495), (119, 1761815), (187, 1121155), (311, 674135), (385, 544561), (515, 407099), (595, 352363), (721, 290785), (935, 224231), (1133, 185045), (1309, 160165), (1555, 134827), (1751, 119735), (2177, 96305), (3421, 61285), (3605, 58157), (5287, 39655), (5665, 37009), (6545, 32033), (7931, 26435), (8755, 23947), (10885, 19261), (12257, 17105)]