20897264880

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{401}}^1\times {\mathrm{72379}}^1$

素因数の和:72799

約数の個数: 120

約数和(自身を含む): 70355965680

約数和(自身を除く): 49458700800

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 36, 40, 45, 48, 60, 72, 80, 90, 120, 144, 180, 240, 360, 401, 720, 802, 1203, 1604, 2005, 2406, 3208, 3609, 4010, 4812, 6015, 6416, 7218, 8020, 9624, 12030, 14436, 16040, 18045, 19248, 24060, 28872, 32080, 36090, 48120, 57744, 72180, 72379, 96240, 144360, 144758, 217137, 288720, 289516, 361895, 434274, 579032, 651411, 723790, 868548, 1085685, 1158064, 1302822, 1447580, 1737096, 2171370, 2605644, 2895160, 3257055, 3474192, 4342740, 5211288, 5790320, 6514110, 8685480, 10422576, 13028220, 17370960, 26056440, 29023979, 52112880, 58047958, 87071937, 116095916, 145119895, 174143874, 232191832, 261215811, 290239790, 348287748, 435359685, 464383664, 522431622, 580479580, 696575496, 870719370, 1044863244, 1160959160, 1306079055, 1393150992, 1741438740, 2089726488, 2321918320, 2612158110, 3482877480, 4179452976, 5224316220, 6965754960, 10448632440, 20897264880]

約数ペア:

[(1, 20897264880), (2, 10448632440), (3, 6965754960), (4, 5224316220), (5, 4179452976), (6, 3482877480), (8, 2612158110), (9, 2321918320), (10, 2089726488), (12, 1741438740), (15, 1393150992), (16, 1306079055), (18, 1160959160), (20, 1044863244), (24, 870719370), (30, 696575496), (36, 580479580), (40, 522431622), (45, 464383664), (48, 435359685), (60, 348287748), (72, 290239790), (80, 261215811), (90, 232191832), (120, 174143874), (144, 145119895), (180, 116095916), (240, 87071937), (360, 58047958), (401, 52112880), (720, 29023979), (802, 26056440), (1203, 17370960), (1604, 13028220), (2005, 10422576), (2406, 8685480), (3208, 6514110), (3609, 5790320), (4010, 5211288), (4812, 4342740), (6015, 3474192), (6416, 3257055), (7218, 2895160), (8020, 2605644), (9624, 2171370), (12030, 1737096), (14436, 1447580), (16040, 1302822), (18045, 1158064), (19248, 1085685), (24060, 868548), (28872, 723790), (32080, 651411), (36090, 579032), (48120, 434274), (57744, 361895), (72180, 289516), (72379, 288720), (96240, 217137), (144360, 144758)]