81810400

素因数分解:

$2^5\times 5^2\times 7^2\times {\mathrm{2087}}^1$

素因数の和:2121

約数の個数: 108

約数和(自身を含む): 232438248

約数和(自身を除く): 150627848

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 25, 28, 32, 35, 40, 49, 50, 56, 70, 80, 98, 100, 112, 140, 160, 175, 196, 200, 224, 245, 280, 350, 392, 400, 490, 560, 700, 784, 800, 980, 1120, 1225, 1400, 1568, 1960, 2087, 2450, 2800, 3920, 4174, 4900, 5600, 7840, 8348, 9800, 10435, 14609, 16696, 19600, 20870, 29218, 33392, 39200, 41740, 52175, 58436, 66784, 73045, 83480, 102263, 104350, 116872, 146090, 166960, 204526, 208700, 233744, 292180, 333920, 365225, 409052, 417400, 467488, 511315, 584360, 730450, 818104, 834800, 1022630, 1168720, 1460900, 1636208, 1669600, 2045260, 2337440, 2556575, 2921800, 3272416, 4090520, 5113150, 5843600, 8181040, 10226300, 11687200, 16362080, 20452600, 40905200, 81810400]

約数ペア:

[(1, 81810400), (2, 40905200), (4, 20452600), (5, 16362080), (7, 11687200), (8, 10226300), (10, 8181040), (14, 5843600), (16, 5113150), (20, 4090520), (25, 3272416), (28, 2921800), (32, 2556575), (35, 2337440), (40, 2045260), (49, 1669600), (50, 1636208), (56, 1460900), (70, 1168720), (80, 1022630), (98, 834800), (100, 818104), (112, 730450), (140, 584360), (160, 511315), (175, 467488), (196, 417400), (200, 409052), (224, 365225), (245, 333920), (280, 292180), (350, 233744), (392, 208700), (400, 204526), (490, 166960), (560, 146090), (700, 116872), (784, 104350), (800, 102263), (980, 83480), (1120, 73045), (1225, 66784), (1400, 58436), (1568, 52175), (1960, 41740), (2087, 39200), (2450, 33392), (2800, 29218), (3920, 20870), (4174, 19600), (4900, 16696), (5600, 14609), (7840, 10435), (8348, 9800)]