21089135

素因数分解:

$5^1\times {\mathrm{43}}^1\times {\mathrm{47}}^1\times {\mathrm{2087}}^1$

素因数の和:2182

約数の個数: 16

約数和(自身を含む): 26459136

約数和(自身を除く): 5370001

約数列:

[1, 5, 43, 47, 215, 235, 2021, 2087, 10105, 10435, 89741, 98089, 448705, 490445, 4217827, 21089135]

約数ペア:

[(1, 21089135), (5, 4217827), (43, 490445), (47, 448705), (215, 98089), (235, 89741), (2021, 10435), (2087, 10105)]