21590172

素因数分解:

$2^2\times 3^3\times {\mathrm{199909}}^1$

素因数の和:199922

約数の個数: 24

約数和(自身を含む): 55974800

約数和(自身を除く): 34384628

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 27, 36, 54, 108, 199909, 399818, 599727, 799636, 1199454, 1799181, 2398908, 3598362, 5397543, 7196724, 10795086, 21590172]

約数ペア:

[(1, 21590172), (2, 10795086), (3, 7196724), (4, 5397543), (6, 3598362), (9, 2398908), (12, 1799181), (18, 1199454), (27, 799636), (36, 599727), (54, 399818), (108, 199909)]