20210400

素因数分解:

$2^5\times 3^2\times 5^2\times 7^1\times {\mathrm{401}}^1$

素因数の和:434

約数の個数: 216

約数和(自身を含む): 81651024

約数和(自身を除く): 61440624

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 24, 25, 28, 30, 32, 35, 36, 40, 42, 45, 48, 50, 56, 60, 63, 70, 72, 75, 80, 84, 90, 96, 100, 105, 112, 120, 126, 140, 144, 150, 160, 168, 175, 180, 200, 210, 224, 225, 240, 252, 280, 288, 300, 315, 336, 350, 360, 400, 401, 420, 450, 480, 504, 525, 560, 600, 630, 672, 700, 720, 800, 802, 840, 900, 1008, 1050, 1120, 1200, 1203, 1260, 1400, 1440, 1575, 1604, 1680, 1800, 2005, 2016, 2100, 2400, 2406, 2520, 2800, 2807, 3150, 3208, 3360, 3600, 3609, 4010, 4200, 4812, 5040, 5600, 5614, 6015, 6300, 6416, 7200, 7218, 8020, 8400, 8421, 9624, 10025, 10080, 11228, 12030, 12600, 12832, 14035, 14436, 16040, 16800, 16842, 18045, 19248, 20050, 22456, 24060, 25200, 25263, 28070, 28872, 30075, 32080, 33684, 36090, 38496, 40100, 42105, 44912, 48120, 50400, 50526, 56140, 57744, 60150, 64160, 67368, 70175, 72180, 80200, 84210, 89824, 90225, 96240, 101052, 112280, 115488, 120300, 126315, 134736, 140350, 144360, 160400, 168420, 180450, 192480, 202104, 210525, 224560, 240600, 252630, 269472, 280700, 288720, 320800, 336840, 360900, 404208, 421050, 449120, 481200, 505260, 561400, 577440, 631575, 673680, 721800, 808416, 842100, 962400, 1010520, 1122800, 1263150, 1347360, 1443600, 1684200, 2021040, 2245600, 2526300, 2887200, 3368400, 4042080, 5052600, 6736800, 10105200, 20210400]

約数ペア:

[(1, 20210400), (2, 10105200), (3, 6736800), (4, 5052600), (5, 4042080), (6, 3368400), (7, 2887200), (8, 2526300), (9, 2245600), (10, 2021040), (12, 1684200), (14, 1443600), (15, 1347360), (16, 1263150), (18, 1122800), (20, 1010520), (21, 962400), (24, 842100), (25, 808416), (28, 721800), (30, 673680), (32, 631575), (35, 577440), (36, 561400), (40, 505260), (42, 481200), (45, 449120), (48, 421050), (50, 404208), (56, 360900), (60, 336840), (63, 320800), (70, 288720), (72, 280700), (75, 269472), (80, 252630), (84, 240600), (90, 224560), (96, 210525), (100, 202104), (105, 192480), (112, 180450), (120, 168420), (126, 160400), (140, 144360), (144, 140350), (150, 134736), (160, 126315), (168, 120300), (175, 115488), (180, 112280), (200, 101052), (210, 96240), (224, 90225), (225, 89824), (240, 84210), (252, 80200), (280, 72180), (288, 70175), (300, 67368), (315, 64160), (336, 60150), (350, 57744), (360, 56140), (400, 50526), (401, 50400), (420, 48120), (450, 44912), (480, 42105), (504, 40100), (525, 38496), (560, 36090), (600, 33684), (630, 32080), (672, 30075), (700, 28872), (720, 28070), (800, 25263), (802, 25200), (840, 24060), (900, 22456), (1008, 20050), (1050, 19248), (1120, 18045), (1200, 16842), (1203, 16800), (1260, 16040), (1400, 14436), (1440, 14035), (1575, 12832), (1604, 12600), (1680, 12030), (1800, 11228), (2005, 10080), (2016, 10025), (2100, 9624), (2400, 8421), (2406, 8400), (2520, 8020), (2800, 7218), (2807, 7200), (3150, 6416), (3208, 6300), (3360, 6015), (3600, 5614), (3609, 5600), (4010, 5040), (4200, 4812)]