21525413

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{5501}}^1$

素因数の和:5564

約数の個数: 16

約数和(自身を含む): 27113856

約数和(自身を除く): 5588443

約数列:

[1, 7, 13, 43, 91, 301, 559, 3913, 5501, 38507, 71513, 236543, 500591, 1655801, 3075059, 21525413]

約数ペア:

[(1, 21525413), (7, 3075059), (13, 1655801), (43, 500591), (91, 236543), (301, 71513), (559, 38507), (3913, 5501)]