21551709

素因数分解:

$3^1\times {\mathrm{47}}^1\times {\mathrm{353}}^1\times {\mathrm{433}}^1$

素因数の和:836

約数の個数: 16

約数和(自身を含む): 29498112

約数和(自身を除く): 7946403

約数列:

[1, 3, 47, 141, 353, 433, 1059, 1299, 16591, 20351, 49773, 61053, 152849, 458547, 7183903, 21551709]

約数ペア:

[(1, 21551709), (3, 7183903), (47, 458547), (141, 152849), (353, 61053), (433, 49773), (1059, 20351), (1299, 16591)]