21081372

素因数分解:

$2^2\times 3^1\times {\mathrm{13}}^1\times {\mathrm{337}}^1\times {\mathrm{401}}^1$

素因数の和:758

約数の個数: 48

約数和(自身を含む): 53263392

約数和(自身を除く): 32182020

約数列:

[1, 2, 3, 4, 6, 12, 13, 26, 39, 52, 78, 156, 337, 401, 674, 802, 1011, 1203, 1348, 1604, 2022, 2406, 4044, 4381, 4812, 5213, 8762, 10426, 13143, 15639, 17524, 20852, 26286, 31278, 52572, 62556, 135137, 270274, 405411, 540548, 810822, 1621644, 1756781, 3513562, 5270343, 7027124, 10540686, 21081372]

約数ペア:

[(1, 21081372), (2, 10540686), (3, 7027124), (4, 5270343), (6, 3513562), (12, 1756781), (13, 1621644), (26, 810822), (39, 540548), (52, 405411), (78, 270274), (156, 135137), (337, 62556), (401, 52572), (674, 31278), (802, 26286), (1011, 20852), (1203, 17524), (1348, 15639), (1604, 13143), (2022, 10426), (2406, 8762), (4044, 5213), (4381, 4812)]