28718760

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{179}}^1\times {\mathrm{191}}^1$

素因数の和:391

約数の個数: 128

約数和(自身を含む): 99532800

約数和(自身を除く): 70814040

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 70, 84, 105, 120, 140, 168, 179, 191, 210, 280, 358, 382, 420, 537, 573, 716, 764, 840, 895, 955, 1074, 1146, 1253, 1337, 1432, 1528, 1790, 1910, 2148, 2292, 2506, 2674, 2685, 2865, 3580, 3759, 3820, 4011, 4296, 4584, 5012, 5348, 5370, 5730, 6265, 6685, 7160, 7518, 7640, 8022, 10024, 10696, 10740, 11460, 12530, 13370, 15036, 16044, 18795, 20055, 21480, 22920, 25060, 26740, 30072, 32088, 34189, 37590, 40110, 50120, 53480, 68378, 75180, 80220, 102567, 136756, 150360, 160440, 170945, 205134, 239323, 273512, 341890, 410268, 478646, 512835, 683780, 717969, 820536, 957292, 1025670, 1196615, 1367560, 1435938, 1914584, 2051340, 2393230, 2871876, 3589845, 4102680, 4786460, 5743752, 7179690, 9572920, 14359380, 28718760]

約数ペア:

[(1, 28718760), (2, 14359380), (3, 9572920), (4, 7179690), (5, 5743752), (6, 4786460), (7, 4102680), (8, 3589845), (10, 2871876), (12, 2393230), (14, 2051340), (15, 1914584), (20, 1435938), (21, 1367560), (24, 1196615), (28, 1025670), (30, 957292), (35, 820536), (40, 717969), (42, 683780), (56, 512835), (60, 478646), (70, 410268), (84, 341890), (105, 273512), (120, 239323), (140, 205134), (168, 170945), (179, 160440), (191, 150360), (210, 136756), (280, 102567), (358, 80220), (382, 75180), (420, 68378), (537, 53480), (573, 50120), (716, 40110), (764, 37590), (840, 34189), (895, 32088), (955, 30072), (1074, 26740), (1146, 25060), (1253, 22920), (1337, 21480), (1432, 20055), (1528, 18795), (1790, 16044), (1910, 15036), (2148, 13370), (2292, 12530), (2506, 11460), (2674, 10740), (2685, 10696), (2865, 10024), (3580, 8022), (3759, 7640), (3820, 7518), (4011, 7160), (4296, 6685), (4584, 6265), (5012, 5730), (5348, 5370)]