81515280

素因数分解:

$2^4\times 3^1\times 5^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{401}}^1$

素因数の和:446

約数の個数: 240

約数和(自身を含む): 318229632

約数和(自身を除く): 236714352

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 11, 12, 14, 15, 16, 20, 21, 22, 24, 28, 30, 33, 35, 40, 42, 44, 48, 55, 56, 60, 66, 70, 77, 80, 84, 88, 105, 110, 112, 120, 121, 132, 140, 154, 165, 168, 176, 210, 220, 231, 240, 242, 264, 280, 308, 330, 336, 363, 385, 401, 420, 440, 462, 484, 528, 560, 605, 616, 660, 726, 770, 802, 840, 847, 880, 924, 968, 1155, 1203, 1210, 1232, 1320, 1452, 1540, 1604, 1680, 1694, 1815, 1848, 1936, 2005, 2310, 2406, 2420, 2541, 2640, 2807, 2904, 3080, 3208, 3388, 3630, 3696, 4010, 4235, 4411, 4620, 4812, 4840, 5082, 5614, 5808, 6015, 6160, 6416, 6776, 7260, 8020, 8421, 8470, 8822, 9240, 9624, 9680, 10164, 11228, 12030, 12705, 13233, 13552, 14035, 14520, 16040, 16842, 16940, 17644, 18480, 19248, 20328, 22055, 22456, 24060, 25410, 26466, 28070, 29040, 30877, 32080, 33684, 33880, 35288, 40656, 42105, 44110, 44912, 48120, 48521, 50820, 52932, 56140, 61754, 66165, 67368, 67760, 70576, 84210, 88220, 92631, 96240, 97042, 101640, 105864, 112280, 123508, 132330, 134736, 145563, 154385, 168420, 176440, 185262, 194084, 203280, 211728, 224560, 242605, 247016, 264660, 291126, 308770, 336840, 339647, 352880, 370524, 388168, 463155, 485210, 494032, 529320, 582252, 617540, 673680, 679294, 727815, 741048, 776336, 926310, 970420, 1018941, 1058640, 1164504, 1235080, 1358588, 1455630, 1482096, 1698235, 1852620, 1940840, 2037882, 2329008, 2470160, 2717176, 2911260, 3396470, 3705240, 3881680, 4075764, 5094705, 5434352, 5822520, 6792940, 7410480, 8151528, 10189410, 11645040, 13585880, 16303056, 20378820, 27171760, 40757640, 81515280]

約数ペア:

[(1, 81515280), (2, 40757640), (3, 27171760), (4, 20378820), (5, 16303056), (6, 13585880), (7, 11645040), (8, 10189410), (10, 8151528), (11, 7410480), (12, 6792940), (14, 5822520), (15, 5434352), (16, 5094705), (20, 4075764), (21, 3881680), (22, 3705240), (24, 3396470), (28, 2911260), (30, 2717176), (33, 2470160), (35, 2329008), (40, 2037882), (42, 1940840), (44, 1852620), (48, 1698235), (55, 1482096), (56, 1455630), (60, 1358588), (66, 1235080), (70, 1164504), (77, 1058640), (80, 1018941), (84, 970420), (88, 926310), (105, 776336), (110, 741048), (112, 727815), (120, 679294), (121, 673680), (132, 617540), (140, 582252), (154, 529320), (165, 494032), (168, 485210), (176, 463155), (210, 388168), (220, 370524), (231, 352880), (240, 339647), (242, 336840), (264, 308770), (280, 291126), (308, 264660), (330, 247016), (336, 242605), (363, 224560), (385, 211728), (401, 203280), (420, 194084), (440, 185262), (462, 176440), (484, 168420), (528, 154385), (560, 145563), (605, 134736), (616, 132330), (660, 123508), (726, 112280), (770, 105864), (802, 101640), (840, 97042), (847, 96240), (880, 92631), (924, 88220), (968, 84210), (1155, 70576), (1203, 67760), (1210, 67368), (1232, 66165), (1320, 61754), (1452, 56140), (1540, 52932), (1604, 50820), (1680, 48521), (1694, 48120), (1815, 44912), (1848, 44110), (1936, 42105), (2005, 40656), (2310, 35288), (2406, 33880), (2420, 33684), (2541, 32080), (2640, 30877), (2807, 29040), (2904, 28070), (3080, 26466), (3208, 25410), (3388, 24060), (3630, 22456), (3696, 22055), (4010, 20328), (4235, 19248), (4411, 18480), (4620, 17644), (4812, 16940), (4840, 16842), (5082, 16040), (5614, 14520), (5808, 14035), (6015, 13552), (6160, 13233), (6416, 12705), (6776, 12030), (7260, 11228), (8020, 10164), (8421, 9680), (8470, 9624), (8822, 9240)]