20695920

素因数分解:

$2^4\times 3^1\times 5^1\times 7^1\times {\mathrm{97}}^1\times {\mathrm{127}}^1$

素因数の和:247

約数の個数: 160

約数和(自身を含む): 74661888

約数和(自身を除く): 53965968

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 35, 40, 42, 48, 56, 60, 70, 80, 84, 97, 105, 112, 120, 127, 140, 168, 194, 210, 240, 254, 280, 291, 336, 381, 388, 420, 485, 508, 560, 582, 635, 679, 762, 776, 840, 889, 970, 1016, 1164, 1270, 1358, 1455, 1524, 1552, 1680, 1778, 1905, 1940, 2032, 2037, 2328, 2540, 2667, 2716, 2910, 3048, 3395, 3556, 3810, 3880, 4074, 4445, 4656, 5080, 5334, 5432, 5820, 6096, 6790, 7112, 7620, 7760, 8148, 8890, 10160, 10185, 10668, 10864, 11640, 12319, 13335, 13580, 14224, 15240, 16296, 17780, 20370, 21336, 23280, 24638, 26670, 27160, 30480, 32592, 35560, 36957, 40740, 42672, 49276, 53340, 54320, 61595, 71120, 73914, 81480, 86233, 98552, 106680, 123190, 147828, 162960, 172466, 184785, 197104, 213360, 246380, 258699, 295656, 344932, 369570, 431165, 492760, 517398, 591312, 689864, 739140, 862330, 985520, 1034796, 1293495, 1379728, 1478280, 1724660, 2069592, 2586990, 2956560, 3449320, 4139184, 5173980, 6898640, 10347960, 20695920]

約数ペア:

[(1, 20695920), (2, 10347960), (3, 6898640), (4, 5173980), (5, 4139184), (6, 3449320), (7, 2956560), (8, 2586990), (10, 2069592), (12, 1724660), (14, 1478280), (15, 1379728), (16, 1293495), (20, 1034796), (21, 985520), (24, 862330), (28, 739140), (30, 689864), (35, 591312), (40, 517398), (42, 492760), (48, 431165), (56, 369570), (60, 344932), (70, 295656), (80, 258699), (84, 246380), (97, 213360), (105, 197104), (112, 184785), (120, 172466), (127, 162960), (140, 147828), (168, 123190), (194, 106680), (210, 98552), (240, 86233), (254, 81480), (280, 73914), (291, 71120), (336, 61595), (381, 54320), (388, 53340), (420, 49276), (485, 42672), (508, 40740), (560, 36957), (582, 35560), (635, 32592), (679, 30480), (762, 27160), (776, 26670), (840, 24638), (889, 23280), (970, 21336), (1016, 20370), (1164, 17780), (1270, 16296), (1358, 15240), (1455, 14224), (1524, 13580), (1552, 13335), (1680, 12319), (1778, 11640), (1905, 10864), (1940, 10668), (2032, 10185), (2037, 10160), (2328, 8890), (2540, 8148), (2667, 7760), (2716, 7620), (2910, 7112), (3048, 6790), (3395, 6096), (3556, 5820), (3810, 5432), (3880, 5334), (4074, 5080), (4445, 4656)]