21057316

素因数分解:

$2^2\times 7^1\times {\mathrm{47}}^1\times {\mathrm{16001}}^1$

素因数の和:16059

約数の個数: 24

約数和(自身を含む): 43013376

約数和(自身を除く): 21956060

約数列:

[1, 2, 4, 7, 14, 28, 47, 94, 188, 329, 658, 1316, 16001, 32002, 64004, 112007, 224014, 448028, 752047, 1504094, 3008188, 5264329, 10528658, 21057316]

約数ペア:

[(1, 21057316), (2, 10528658), (4, 5264329), (7, 3008188), (14, 1504094), (28, 752047), (47, 448028), (94, 224014), (188, 112007), (329, 64004), (658, 32002), (1316, 16001)]