20554800

素因数分解:

$2^4\times 3^1\times 5^2\times 7^1\times {\mathrm{2447}}^1$

素因数の和:2475

約数の個数: 120

約数和(自身を含む): 75280896

約数和(自身を除く): 54726096

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 25, 28, 30, 35, 40, 42, 48, 50, 56, 60, 70, 75, 80, 84, 100, 105, 112, 120, 140, 150, 168, 175, 200, 210, 240, 280, 300, 336, 350, 400, 420, 525, 560, 600, 700, 840, 1050, 1200, 1400, 1680, 2100, 2447, 2800, 4200, 4894, 7341, 8400, 9788, 12235, 14682, 17129, 19576, 24470, 29364, 34258, 36705, 39152, 48940, 51387, 58728, 61175, 68516, 73410, 85645, 97880, 102774, 117456, 122350, 137032, 146820, 171290, 183525, 195760, 205548, 244700, 256935, 274064, 293640, 342580, 367050, 411096, 428225, 489400, 513870, 587280, 685160, 734100, 822192, 856450, 978800, 1027740, 1284675, 1370320, 1468200, 1712900, 2055480, 2569350, 2936400, 3425800, 4110960, 5138700, 6851600, 10277400, 20554800]

約数ペア:

[(1, 20554800), (2, 10277400), (3, 6851600), (4, 5138700), (5, 4110960), (6, 3425800), (7, 2936400), (8, 2569350), (10, 2055480), (12, 1712900), (14, 1468200), (15, 1370320), (16, 1284675), (20, 1027740), (21, 978800), (24, 856450), (25, 822192), (28, 734100), (30, 685160), (35, 587280), (40, 513870), (42, 489400), (48, 428225), (50, 411096), (56, 367050), (60, 342580), (70, 293640), (75, 274064), (80, 256935), (84, 244700), (100, 205548), (105, 195760), (112, 183525), (120, 171290), (140, 146820), (150, 137032), (168, 122350), (175, 117456), (200, 102774), (210, 97880), (240, 85645), (280, 73410), (300, 68516), (336, 61175), (350, 58728), (400, 51387), (420, 48940), (525, 39152), (560, 36705), (600, 34258), (700, 29364), (840, 24470), (1050, 19576), (1200, 17129), (1400, 14682), (1680, 12235), (2100, 9788), (2447, 8400), (2800, 7341), (4200, 4894)]