21756459

素因数分解:

$3^1\times {\mathrm{23}}^1\times {\mathrm{71}}^1\times {\mathrm{4441}}^1$

素因数の和:4538

約数の個数: 16

約数和(自身を含む): 30703104

約数和(自身を除く): 8946645

約数列:

[1, 3, 23, 69, 71, 213, 1633, 4441, 4899, 13323, 102143, 306429, 315311, 945933, 7252153, 21756459]

約数ペア:

[(1, 21756459), (3, 7252153), (23, 945933), (69, 315311), (71, 306429), (213, 102143), (1633, 13323), (4441, 4899)]