21084843

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{131}}^1\times {\mathrm{4127}}^1$

素因数の和:4274

約数の個数: 16

約数和(自身を含む): 30514176

約数和(自身を除く): 9429333

約数列:

[1, 3, 13, 39, 131, 393, 1703, 4127, 5109, 12381, 53651, 160953, 540637, 1621911, 7028281, 21084843]

約数ペア:

[(1, 21084843), (3, 7028281), (13, 1621911), (39, 540637), (131, 160953), (393, 53651), (1703, 12381), (4127, 5109)]