21078858

素因数分解:

$2^1\times 3^1\times {\mathrm{43}}^1\times {\mathrm{81701}}^1$

素因数の和:81749

約数の個数: 16

約数和(自身を含む): 43138656

約数和(自身を除く): 22059798

約数列:

[1, 2, 3, 6, 43, 86, 129, 258, 81701, 163402, 245103, 490206, 3513143, 7026286, 10539429, 21078858]

約数ペア:

[(1, 21078858), (2, 10539429), (3, 7026286), (6, 3513143), (43, 490206), (86, 245103), (129, 163402), (258, 81701)]