21751895

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{131}}^1\times {\mathrm{3019}}^1$

素因数の和:3166

約数の個数: 16

約数和(自身を含む): 28702080

約数和(自身を除く): 6950185

約数列:

[1, 5, 11, 55, 131, 655, 1441, 3019, 7205, 15095, 33209, 166045, 395489, 1977445, 4350379, 21751895]

約数ペア:

[(1, 21751895), (5, 4350379), (11, 1977445), (55, 395489), (131, 166045), (655, 33209), (1441, 15095), (3019, 7205)]