21293091

素因数分解:

$3^3\times {\mathrm{19}}^1\times {\mathrm{41507}}^1$

素因数の和:41535

約数の個数: 16

約数和(自身を含む): 33206400

約数和(自身を除く): 11913309

約数列:

[1, 3, 9, 19, 27, 57, 171, 513, 41507, 124521, 373563, 788633, 1120689, 2365899, 7097697, 21293091]

約数ペア:

[(1, 21293091), (3, 7097697), (9, 2365899), (19, 1120689), (27, 788633), (57, 373563), (171, 124521), (513, 41507)]