202012280

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{257}}^1\times {\mathrm{457}}^1$

素因数の和:768

約数の個数: 64

約数和(自身を含む): 467929440

約数和(自身を除く): 265917160

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 257, 344, 430, 457, 514, 860, 914, 1028, 1285, 1720, 1828, 2056, 2285, 2570, 3656, 4570, 5140, 9140, 10280, 11051, 18280, 19651, 22102, 39302, 44204, 55255, 78604, 88408, 98255, 110510, 117449, 157208, 196510, 221020, 234898, 393020, 442040, 469796, 587245, 786040, 939592, 1174490, 2348980, 4697960, 5050307, 10100614, 20201228, 25251535, 40402456, 50503070, 101006140, 202012280]

約数ペア:

[(1, 202012280), (2, 101006140), (4, 50503070), (5, 40402456), (8, 25251535), (10, 20201228), (20, 10100614), (40, 5050307), (43, 4697960), (86, 2348980), (172, 1174490), (215, 939592), (257, 786040), (344, 587245), (430, 469796), (457, 442040), (514, 393020), (860, 234898), (914, 221020), (1028, 196510), (1285, 157208), (1720, 117449), (1828, 110510), (2056, 98255), (2285, 88408), (2570, 78604), (3656, 55255), (4570, 44204), (5140, 39302), (9140, 22102), (10280, 19651), (11051, 18280)]