638862080

素因数分解:

$2^8\times 5^1\times {\mathrm{19}}^1\times {\mathrm{109}}^1\times {\mathrm{241}}^1$

素因数の和:390

約数の個数: 144

約数和(自身を含む): 1632338400

約数和(自身を除く): 993476320

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 32, 38, 40, 64, 76, 80, 95, 109, 128, 152, 160, 190, 218, 241, 256, 304, 320, 380, 436, 482, 545, 608, 640, 760, 872, 964, 1090, 1205, 1216, 1280, 1520, 1744, 1928, 2071, 2180, 2410, 2432, 3040, 3488, 3856, 4142, 4360, 4579, 4820, 4864, 6080, 6976, 7712, 8284, 8720, 9158, 9640, 10355, 12160, 13952, 15424, 16568, 17440, 18316, 19280, 20710, 22895, 24320, 26269, 27904, 30848, 33136, 34880, 36632, 38560, 41420, 45790, 52538, 61696, 66272, 69760, 73264, 77120, 82840, 91580, 105076, 131345, 132544, 139520, 146528, 154240, 165680, 183160, 210152, 262690, 265088, 293056, 308480, 331360, 366320, 420304, 499111, 525380, 530176, 586112, 662720, 732640, 840608, 998222, 1050760, 1172224, 1325440, 1465280, 1681216, 1996444, 2101520, 2495555, 2650880, 2930560, 3362432, 3992888, 4203040, 4991110, 5861120, 6724864, 7985776, 8406080, 9982220, 15971552, 16812160, 19964440, 31943104, 33624320, 39928880, 63886208, 79857760, 127772416, 159715520, 319431040, 638862080]

約数ペア:

[(1, 638862080), (2, 319431040), (4, 159715520), (5, 127772416), (8, 79857760), (10, 63886208), (16, 39928880), (19, 33624320), (20, 31943104), (32, 19964440), (38, 16812160), (40, 15971552), (64, 9982220), (76, 8406080), (80, 7985776), (95, 6724864), (109, 5861120), (128, 4991110), (152, 4203040), (160, 3992888), (190, 3362432), (218, 2930560), (241, 2650880), (256, 2495555), (304, 2101520), (320, 1996444), (380, 1681216), (436, 1465280), (482, 1325440), (545, 1172224), (608, 1050760), (640, 998222), (760, 840608), (872, 732640), (964, 662720), (1090, 586112), (1205, 530176), (1216, 525380), (1280, 499111), (1520, 420304), (1744, 366320), (1928, 331360), (2071, 308480), (2180, 293056), (2410, 265088), (2432, 262690), (3040, 210152), (3488, 183160), (3856, 165680), (4142, 154240), (4360, 146528), (4579, 139520), (4820, 132544), (4864, 131345), (6080, 105076), (6976, 91580), (7712, 82840), (8284, 77120), (8720, 73264), (9158, 69760), (9640, 66272), (10355, 61696), (12160, 52538), (13952, 45790), (15424, 41420), (16568, 38560), (17440, 36632), (18316, 34880), (19280, 33136), (20710, 30848), (22895, 27904), (24320, 26269)]