19963563

素因数分解:

$3^1\times {\mathrm{23}}^1\times {\mathrm{53}}^2\times {\mathrm{103}}^1$

素因数の和:235

約数の個数: 24

約数和(自身を含む): 28584192

約数和(自身を除く): 8620629

約数列:

[1, 3, 23, 53, 69, 103, 159, 309, 1219, 2369, 2809, 3657, 5459, 7107, 8427, 16377, 64607, 125557, 193821, 289327, 376671, 867981, 6654521, 19963563]

約数ペア:

[(1, 19963563), (3, 6654521), (23, 867981), (53, 376671), (69, 289327), (103, 193821), (159, 125557), (309, 64607), (1219, 16377), (2369, 8427), (2809, 7107), (3657, 5459)]