20921804249479

素因数分解:

$7^1\times {\mathrm{199}}^1\times {\mathrm{23333}}^1\times {\mathrm{643691}}^1$

素因数の和:667230

約数の個数: 16

約数和(自身を含む): 24031854604800

約数和(自身を除く): 3110050355321

約数列:

[1, 7, 199, 1393, 23333, 163331, 643691, 4505837, 4643267, 32502869, 128094509, 896661563, 15019242103, 105134694721, 2988829178497, 20921804249479]

約数ペア:

[(1, 20921804249479), (7, 2988829178497), (199, 105134694721), (1393, 15019242103), (23333, 896661563), (163331, 128094509), (643691, 32502869), (4505837, 4643267)]