21210285

素因数分解:

$3^1\times 5^1\times {\mathrm{439}}^1\times {\mathrm{3221}}^1$

素因数の和:3668

約数の個数: 16

約数和(自身を含む): 34024320

約数和(自身を除く): 12814035

約数列:

[1, 3, 5, 15, 439, 1317, 2195, 3221, 6585, 9663, 16105, 48315, 1414019, 4242057, 7070095, 21210285]

約数ペア:

[(1, 21210285), (3, 7070095), (5, 4242057), (15, 1414019), (439, 48315), (1317, 16105), (2195, 9663), (3221, 6585)]