19955691

素因数分解:

$3^2\times 7^2\times {\mathrm{37}}^1\times {\mathrm{1223}}^1$

素因数の和:1280

約数の個数: 36

約数和(自身を含む): 34465392

約数和(自身を除く): 14509701

約数列:

[1, 3, 7, 9, 21, 37, 49, 63, 111, 147, 259, 333, 441, 777, 1223, 1813, 2331, 3669, 5439, 8561, 11007, 16317, 25683, 45251, 59927, 77049, 135753, 179781, 316757, 407259, 539343, 950271, 2217299, 2850813, 6651897, 19955691]

約数ペア:

[(1, 19955691), (3, 6651897), (7, 2850813), (9, 2217299), (21, 950271), (37, 539343), (49, 407259), (63, 316757), (111, 179781), (147, 135753), (259, 77049), (333, 59927), (441, 45251), (777, 25683), (1223, 16317), (1813, 11007), (2331, 8561), (3669, 5439)]