21219549

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{349}}^1\times {\mathrm{1559}}^1$

素因数の和:1924

約数の個数: 16

約数和(自身を含む): 30576000

約数和(自身を除く): 9356451

約数列:

[1, 3, 13, 39, 349, 1047, 1559, 4537, 4677, 13611, 20267, 60801, 544091, 1632273, 7073183, 21219549]

約数ペア:

[(1, 21219549), (3, 7073183), (13, 1632273), (39, 544091), (349, 60801), (1047, 20267), (1559, 13611), (4537, 4677)]