21000441

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{90911}}^1$

素因数の和:90932

約数の個数: 16

約数和(自身を含む): 34910208

約数和(自身を除く): 13909767

約数列:

[1, 3, 7, 11, 21, 33, 77, 231, 90911, 272733, 636377, 1000021, 1909131, 3000063, 7000147, 21000441]

約数ペア:

[(1, 21000441), (3, 7000147), (7, 3000063), (11, 1909131), (21, 1000021), (33, 636377), (77, 272733), (231, 90911)]