21003521

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{6653}}^1$

素因数の和:6712

約数の個数: 16

約数和(自身を含む): 26828928

約数和(自身を除く): 5825407

約数列:

[1, 7, 11, 41, 77, 287, 451, 3157, 6653, 46571, 73183, 272773, 512281, 1909411, 3000503, 21003521]

約数ペア:

[(1, 21003521), (7, 3000503), (11, 1909411), (41, 512281), (77, 272773), (287, 73183), (451, 46571), (3157, 6653)]