21004912

素因数分解:

$2^4\times {\mathrm{353}}^1\times {\mathrm{3719}}^1$

素因数の和:4080

約数の個数: 20

約数和(自身を含む): 40823280

約数和(自身を除く): 19818368

約数列:

[1, 2, 4, 8, 16, 353, 706, 1412, 2824, 3719, 5648, 7438, 14876, 29752, 59504, 1312807, 2625614, 5251228, 10502456, 21004912]

約数ペア:

[(1, 21004912), (2, 10502456), (4, 5251228), (8, 2625614), (16, 1312807), (353, 59504), (706, 29752), (1412, 14876), (2824, 7438), (3719, 5648)]