21048163

素因数分解:

${\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{73}}^1\times {\mathrm{131}}^1$

素因数の和:306

約数の個数: 16

約数和(自身を含む): 22505472

約数和(自身を除く): 1457309

約数列:

[1, 31, 71, 73, 131, 2201, 2263, 4061, 5183, 9301, 9563, 160673, 288331, 296453, 678973, 21048163]

約数ペア:

[(1, 21048163), (31, 678973), (71, 296453), (73, 288331), (131, 160673), (2201, 9563), (2263, 9301), (4061, 5183)]