21785709

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{509}}^1\times {\mathrm{1297}}^1$

素因数の和:1820

約数の個数: 16

約数和(自身を含む): 31775040

約数和(自身を除く): 9989331

約数列:

[1, 3, 11, 33, 509, 1297, 1527, 3891, 5599, 14267, 16797, 42801, 660173, 1980519, 7261903, 21785709]

約数ペア:

[(1, 21785709), (3, 7261903), (11, 1980519), (33, 660173), (509, 42801), (1297, 16797), (1527, 14267), (3891, 5599)]