21481587

素因数分解:

$3^2\times {\mathrm{439}}^1\times {\mathrm{5437}}^1$

素因数の和:5882

約数の個数: 12

約数和(自身を含む): 31105360

約数和(自身を除く): 9623773

約数列:

[1, 3, 9, 439, 1317, 3951, 5437, 16311, 48933, 2386843, 7160529, 21481587]

約数ペア:

[(1, 21481587), (3, 7160529), (9, 2386843), (439, 48933), (1317, 16311), (3951, 5437)]