20009921

素因数分解:

${\mathrm{43}}^1\times {\mathrm{47}}^1\times {\mathrm{9901}}^1$

素因数の和:9991

約数の個数: 8

約数和(自身を含む): 20913024

約数和(自身を除く): 903103

約数列:

[1, 43, 47, 2021, 9901, 425743, 465347, 20009921]

約数ペア:

[(1, 20009921), (43, 465347), (47, 425743), (2021, 9901)]