20204800

素因数分解:

$2^8\times 5^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{41}}^1$

素因数の和:85

約数の個数: 216

約数和(自身を含む): 63870912

約数和(自身を除く): 43666112

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 16, 20, 22, 25, 28, 32, 35, 40, 41, 44, 50, 55, 56, 64, 70, 77, 80, 82, 88, 100, 110, 112, 128, 140, 154, 160, 164, 175, 176, 200, 205, 220, 224, 256, 275, 280, 287, 308, 320, 328, 350, 352, 385, 400, 410, 440, 448, 451, 550, 560, 574, 616, 640, 656, 700, 704, 770, 800, 820, 880, 896, 902, 1025, 1100, 1120, 1148, 1232, 1280, 1312, 1400, 1408, 1435, 1540, 1600, 1640, 1760, 1792, 1804, 1925, 2050, 2200, 2240, 2255, 2296, 2464, 2624, 2800, 2816, 2870, 3080, 3157, 3200, 3280, 3520, 3608, 3850, 4100, 4400, 4480, 4510, 4592, 4928, 5248, 5600, 5740, 6160, 6314, 6400, 6560, 7040, 7175, 7216, 7700, 8200, 8800, 8960, 9020, 9184, 9856, 10496, 11200, 11275, 11480, 12320, 12628, 13120, 14080, 14350, 14432, 15400, 15785, 16400, 17600, 18040, 18368, 19712, 22400, 22550, 22960, 24640, 25256, 26240, 28700, 28864, 30800, 31570, 32800, 35200, 36080, 36736, 44800, 45100, 45920, 49280, 50512, 52480, 57400, 57728, 61600, 63140, 65600, 70400, 72160, 73472, 78925, 90200, 91840, 98560, 101024, 114800, 115456, 123200, 126280, 131200, 144320, 157850, 180400, 183680, 202048, 229600, 246400, 252560, 262400, 288640, 315700, 360800, 367360, 404096, 459200, 492800, 505120, 577280, 631400, 721600, 808192, 918400, 1010240, 1262800, 1443200, 1836800, 2020480, 2525600, 2886400, 4040960, 5051200, 10102400, 20204800]

約数ペア:

[(1, 20204800), (2, 10102400), (4, 5051200), (5, 4040960), (7, 2886400), (8, 2525600), (10, 2020480), (11, 1836800), (14, 1443200), (16, 1262800), (20, 1010240), (22, 918400), (25, 808192), (28, 721600), (32, 631400), (35, 577280), (40, 505120), (41, 492800), (44, 459200), (50, 404096), (55, 367360), (56, 360800), (64, 315700), (70, 288640), (77, 262400), (80, 252560), (82, 246400), (88, 229600), (100, 202048), (110, 183680), (112, 180400), (128, 157850), (140, 144320), (154, 131200), (160, 126280), (164, 123200), (175, 115456), (176, 114800), (200, 101024), (205, 98560), (220, 91840), (224, 90200), (256, 78925), (275, 73472), (280, 72160), (287, 70400), (308, 65600), (320, 63140), (328, 61600), (350, 57728), (352, 57400), (385, 52480), (400, 50512), (410, 49280), (440, 45920), (448, 45100), (451, 44800), (550, 36736), (560, 36080), (574, 35200), (616, 32800), (640, 31570), (656, 30800), (700, 28864), (704, 28700), (770, 26240), (800, 25256), (820, 24640), (880, 22960), (896, 22550), (902, 22400), (1025, 19712), (1100, 18368), (1120, 18040), (1148, 17600), (1232, 16400), (1280, 15785), (1312, 15400), (1400, 14432), (1408, 14350), (1435, 14080), (1540, 13120), (1600, 12628), (1640, 12320), (1760, 11480), (1792, 11275), (1804, 11200), (1925, 10496), (2050, 9856), (2200, 9184), (2240, 9020), (2255, 8960), (2296, 8800), (2464, 8200), (2624, 7700), (2800, 7216), (2816, 7175), (2870, 7040), (3080, 6560), (3157, 6400), (3200, 6314), (3280, 6160), (3520, 5740), (3608, 5600), (3850, 5248), (4100, 4928), (4400, 4592), (4480, 4510)]