19788405

素因数分解:

$3^1\times 5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{109}}^1$

素因数の和:163

約数の個数: 96

約数和(自身を含む): 42134400

約数和(自身を除く): 22345995

約数列:

[1, 3, 5, 7, 13, 15, 19, 21, 35, 39, 49, 57, 65, 91, 95, 105, 109, 133, 147, 195, 245, 247, 273, 285, 327, 399, 455, 545, 637, 665, 735, 741, 763, 931, 1235, 1365, 1417, 1635, 1729, 1911, 1995, 2071, 2289, 2793, 3185, 3705, 3815, 4251, 4655, 5187, 5341, 6213, 7085, 8645, 9555, 9919, 10355, 11445, 12103, 13965, 14497, 16023, 21255, 25935, 26705, 26923, 29757, 31065, 36309, 43491, 49595, 60515, 69433, 72485, 80115, 80769, 101479, 134615, 148785, 181545, 188461, 208299, 217455, 304437, 347165, 403845, 507395, 565383, 942305, 1041495, 1319227, 1522185, 2826915, 3957681, 6596135, 19788405]

約数ペア:

[(1, 19788405), (3, 6596135), (5, 3957681), (7, 2826915), (13, 1522185), (15, 1319227), (19, 1041495), (21, 942305), (35, 565383), (39, 507395), (49, 403845), (57, 347165), (65, 304437), (91, 217455), (95, 208299), (105, 188461), (109, 181545), (133, 148785), (147, 134615), (195, 101479), (245, 80769), (247, 80115), (273, 72485), (285, 69433), (327, 60515), (399, 49595), (455, 43491), (545, 36309), (637, 31065), (665, 29757), (735, 26923), (741, 26705), (763, 25935), (931, 21255), (1235, 16023), (1365, 14497), (1417, 13965), (1635, 12103), (1729, 11445), (1911, 10355), (1995, 9919), (2071, 9555), (2289, 8645), (2793, 7085), (3185, 6213), (3705, 5341), (3815, 5187), (4251, 4655)]