20825700

素因数分解:

$2^2\times 3^1\times 5^2\times 7^1\times {\mathrm{47}}^1\times {\mathrm{211}}^1$

素因数の和:282

約数の個数: 144

約数和(自身を含む): 70662144

約数和(自身を除く): 49836444

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 25, 28, 30, 35, 42, 47, 50, 60, 70, 75, 84, 94, 100, 105, 140, 141, 150, 175, 188, 210, 211, 235, 282, 300, 329, 350, 420, 422, 470, 525, 564, 633, 658, 700, 705, 844, 940, 987, 1050, 1055, 1175, 1266, 1316, 1410, 1477, 1645, 1974, 2100, 2110, 2350, 2532, 2820, 2954, 3165, 3290, 3525, 3948, 4220, 4431, 4700, 4935, 5275, 5908, 6330, 6580, 7050, 7385, 8225, 8862, 9870, 9917, 10550, 12660, 14100, 14770, 15825, 16450, 17724, 19740, 19834, 21100, 22155, 24675, 29540, 29751, 31650, 32900, 36925, 39668, 44310, 49350, 49585, 59502, 63300, 69419, 73850, 88620, 98700, 99170, 110775, 119004, 138838, 147700, 148755, 198340, 208257, 221550, 247925, 277676, 297510, 347095, 416514, 443100, 495850, 595020, 694190, 743775, 833028, 991700, 1041285, 1388380, 1487550, 1735475, 2082570, 2975100, 3470950, 4165140, 5206425, 6941900, 10412850, 20825700]

約数ペア:

[(1, 20825700), (2, 10412850), (3, 6941900), (4, 5206425), (5, 4165140), (6, 3470950), (7, 2975100), (10, 2082570), (12, 1735475), (14, 1487550), (15, 1388380), (20, 1041285), (21, 991700), (25, 833028), (28, 743775), (30, 694190), (35, 595020), (42, 495850), (47, 443100), (50, 416514), (60, 347095), (70, 297510), (75, 277676), (84, 247925), (94, 221550), (100, 208257), (105, 198340), (140, 148755), (141, 147700), (150, 138838), (175, 119004), (188, 110775), (210, 99170), (211, 98700), (235, 88620), (282, 73850), (300, 69419), (329, 63300), (350, 59502), (420, 49585), (422, 49350), (470, 44310), (525, 39668), (564, 36925), (633, 32900), (658, 31650), (700, 29751), (705, 29540), (844, 24675), (940, 22155), (987, 21100), (1050, 19834), (1055, 19740), (1175, 17724), (1266, 16450), (1316, 15825), (1410, 14770), (1477, 14100), (1645, 12660), (1974, 10550), (2100, 9917), (2110, 9870), (2350, 8862), (2532, 8225), (2820, 7385), (2954, 7050), (3165, 6580), (3290, 6330), (3525, 5908), (3948, 5275), (4220, 4935), (4431, 4700)]