20210991

素因数分解:

$3^1\times {\mathrm{37}}^1\times {\mathrm{41}}^1\times {\mathrm{4441}}^1$

素因数の和:4522

約数の個数: 16

約数和(自身を含む): 28357728

約数和(自身を除く): 8146737

約数列:

[1, 3, 37, 41, 111, 123, 1517, 4441, 4551, 13323, 164317, 182081, 492951, 546243, 6736997, 20210991]

約数ペア:

[(1, 20210991), (3, 6736997), (37, 546243), (41, 492951), (111, 182081), (123, 164317), (1517, 13323), (4441, 4551)]