20771800

素因数分解:

$2^3\times 5^2\times 7^1\times {\mathrm{37}}^1\times {\mathrm{401}}^1$

素因数の和:461

約数の個数: 96

約数和(自身を含む): 56826720

約数和(自身を除く): 36054920

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 25, 28, 35, 37, 40, 50, 56, 70, 74, 100, 140, 148, 175, 185, 200, 259, 280, 296, 350, 370, 401, 518, 700, 740, 802, 925, 1036, 1295, 1400, 1480, 1604, 1850, 2005, 2072, 2590, 2807, 3208, 3700, 4010, 5180, 5614, 6475, 7400, 8020, 10025, 10360, 11228, 12950, 14035, 14837, 16040, 20050, 22456, 25900, 28070, 29674, 40100, 51800, 56140, 59348, 70175, 74185, 80200, 103859, 112280, 118696, 140350, 148370, 207718, 280700, 296740, 370925, 415436, 519295, 561400, 593480, 741850, 830872, 1038590, 1483700, 2077180, 2596475, 2967400, 4154360, 5192950, 10385900, 20771800]

約数ペア:

[(1, 20771800), (2, 10385900), (4, 5192950), (5, 4154360), (7, 2967400), (8, 2596475), (10, 2077180), (14, 1483700), (20, 1038590), (25, 830872), (28, 741850), (35, 593480), (37, 561400), (40, 519295), (50, 415436), (56, 370925), (70, 296740), (74, 280700), (100, 207718), (140, 148370), (148, 140350), (175, 118696), (185, 112280), (200, 103859), (259, 80200), (280, 74185), (296, 70175), (350, 59348), (370, 56140), (401, 51800), (518, 40100), (700, 29674), (740, 28070), (802, 25900), (925, 22456), (1036, 20050), (1295, 16040), (1400, 14837), (1480, 14035), (1604, 12950), (1850, 11228), (2005, 10360), (2072, 10025), (2590, 8020), (2807, 7400), (3208, 6475), (3700, 5614), (4010, 5180)]