205128120

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{193}}^1\times {\mathrm{521}}^1$

素因数の和:745

約数の個数: 128

約数和(自身を含む): 656216640

約数和(自身を除く): 451088520

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 17, 20, 24, 30, 34, 40, 51, 60, 68, 85, 102, 120, 136, 170, 193, 204, 255, 340, 386, 408, 510, 521, 579, 680, 772, 965, 1020, 1042, 1158, 1544, 1563, 1930, 2040, 2084, 2316, 2605, 2895, 3126, 3281, 3860, 4168, 4632, 5210, 5790, 6252, 6562, 7720, 7815, 8857, 9843, 10420, 11580, 12504, 13124, 15630, 16405, 17714, 19686, 20840, 23160, 26248, 26571, 31260, 32810, 35428, 39372, 44285, 49215, 53142, 62520, 65620, 70856, 78744, 88570, 98430, 100553, 106284, 131240, 132855, 177140, 196860, 201106, 212568, 265710, 301659, 354280, 393720, 402212, 502765, 531420, 603318, 804424, 1005530, 1062840, 1206636, 1508295, 1709401, 2011060, 2413272, 3016590, 3418802, 4022120, 5128203, 6033180, 6837604, 8547005, 10256406, 12066360, 13675208, 17094010, 20512812, 25641015, 34188020, 41025624, 51282030, 68376040, 102564060, 205128120]

約数ペア:

[(1, 205128120), (2, 102564060), (3, 68376040), (4, 51282030), (5, 41025624), (6, 34188020), (8, 25641015), (10, 20512812), (12, 17094010), (15, 13675208), (17, 12066360), (20, 10256406), (24, 8547005), (30, 6837604), (34, 6033180), (40, 5128203), (51, 4022120), (60, 3418802), (68, 3016590), (85, 2413272), (102, 2011060), (120, 1709401), (136, 1508295), (170, 1206636), (193, 1062840), (204, 1005530), (255, 804424), (340, 603318), (386, 531420), (408, 502765), (510, 402212), (521, 393720), (579, 354280), (680, 301659), (772, 265710), (965, 212568), (1020, 201106), (1042, 196860), (1158, 177140), (1544, 132855), (1563, 131240), (1930, 106284), (2040, 100553), (2084, 98430), (2316, 88570), (2605, 78744), (2895, 70856), (3126, 65620), (3281, 62520), (3860, 53142), (4168, 49215), (4632, 44285), (5210, 39372), (5790, 35428), (6252, 32810), (6562, 31260), (7720, 26571), (7815, 26248), (8857, 23160), (9843, 20840), (10420, 19686), (11580, 17714), (12504, 16405), (13124, 15630)]