820135.0000000

素因数分解:

$3^4\times 7^2\times {\mathrm{37}}^2$

素因数の和:100

約数の個数: 45

約数和(自身を含む): 9704079

約数和(自身を除く): 4270518

約数列:

[1, 3, 7, 9, 21, 27, 37, 49, 63, 81, 111, 147, 189, 259, 333, 441, 567, 777, 999, 1323, 1369, 1813, 2331, 2997, 3969, 4107, 5439, 6993, 9583, 12321, 16317, 20979, 28749, 36963, 48951, 67081, 86247, 110889, 146853, 201243, 258741, 603729, 776223, 1811187, 5433561]

約数ペア:

[(1, 5433561), (3, 1811187), (7, 776223), (9, 603729), (21, 258741), (27, 201243), (37, 146853), (49, 110889), (63, 86247), (81, 67081), (111, 48951), (147, 36963), (189, 28749), (259, 20979), (333, 16317), (441, 12321), (567, 9583), (777, 6993), (999, 5439), (1323, 4107), (1369, 3969), (1813, 2997)]