21778821

素因数分解:

$3^3\times {\mathrm{683}}^1\times {\mathrm{1181}}^1$

素因数の和:1873

約数の個数: 16

約数和(自身を含む): 32339520

約数和(自身を除く): 10560699

約数列:

[1, 3, 9, 27, 683, 1181, 2049, 3543, 6147, 10629, 18441, 31887, 806623, 2419869, 7259607, 21778821]

約数ペア:

[(1, 21778821), (3, 7259607), (9, 2419869), (27, 806623), (683, 31887), (1181, 18441), (2049, 10629), (3543, 6147)]