440257720

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{137}}^1\times {\mathrm{499}}^1$

素因数の和:677

約数の個数: 128

約数和(自身を含む): 1192320000

約数和(自身を除く): 752062280

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 23, 28, 35, 40, 46, 56, 70, 92, 115, 137, 140, 161, 184, 230, 274, 280, 322, 460, 499, 548, 644, 685, 805, 920, 959, 998, 1096, 1288, 1370, 1610, 1918, 1996, 2495, 2740, 3151, 3220, 3493, 3836, 3992, 4795, 4990, 5480, 6302, 6440, 6986, 7672, 9590, 9980, 11477, 12604, 13972, 15755, 17465, 19180, 19960, 22057, 22954, 25208, 27944, 31510, 34930, 38360, 44114, 45908, 57385, 63020, 68363, 69860, 80339, 88228, 91816, 110285, 114770, 126040, 136726, 139720, 160678, 176456, 220570, 229540, 273452, 321356, 341815, 401695, 441140, 459080, 478541, 546904, 642712, 683630, 803390, 882280, 957082, 1367260, 1572349, 1606780, 1914164, 2392705, 2734520, 3144698, 3213560, 3828328, 4785410, 6289396, 7861745, 9570820, 11006443, 12578792, 15723490, 19141640, 22012886, 31446980, 44025772, 55032215, 62893960, 88051544, 110064430, 220128860, 440257720]

約数ペア:

[(1, 440257720), (2, 220128860), (4, 110064430), (5, 88051544), (7, 62893960), (8, 55032215), (10, 44025772), (14, 31446980), (20, 22012886), (23, 19141640), (28, 15723490), (35, 12578792), (40, 11006443), (46, 9570820), (56, 7861745), (70, 6289396), (92, 4785410), (115, 3828328), (137, 3213560), (140, 3144698), (161, 2734520), (184, 2392705), (230, 1914164), (274, 1606780), (280, 1572349), (322, 1367260), (460, 957082), (499, 882280), (548, 803390), (644, 683630), (685, 642712), (805, 546904), (920, 478541), (959, 459080), (998, 441140), (1096, 401695), (1288, 341815), (1370, 321356), (1610, 273452), (1918, 229540), (1996, 220570), (2495, 176456), (2740, 160678), (3151, 139720), (3220, 136726), (3493, 126040), (3836, 114770), (3992, 110285), (4795, 91816), (4990, 88228), (5480, 80339), (6302, 69860), (6440, 68363), (6986, 63020), (7672, 57385), (9590, 45908), (9980, 44114), (11477, 38360), (12604, 34930), (13972, 31510), (15755, 27944), (17465, 25208), (19180, 22954), (19960, 22057)]