21285121

素因数分解:

${\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{2039}}^1$

素因数の和:2136

約数の個数: 16

約数和(自身を含む): 25361280

約数和(自身を除く): 4076159

約数列:

[1, 11, 13, 73, 143, 803, 949, 2039, 10439, 22429, 26507, 148847, 291577, 1637317, 1935011, 21285121]

約数ペア:

[(1, 21285121), (11, 1935011), (13, 1637317), (73, 291577), (143, 148847), (803, 26507), (949, 22429), (2039, 10439)]