20212021

素因数分解:

${\mathrm{43}}^1\times {\mathrm{47}}^1\times {\mathrm{73}}^1\times {\mathrm{137}}^1$

素因数の和:300

約数の個数: 16

約数和(自身を含む): 21567744

約数和(自身を除く): 1355723

約数列:

[1, 43, 47, 73, 137, 2021, 3139, 3431, 5891, 6439, 10001, 147533, 276877, 430043, 470047, 20212021]

約数ペア:

[(1, 20212021), (43, 470047), (47, 430043), (73, 276877), (137, 147533), (2021, 10001), (3139, 6439), (3431, 5891)]