21080631

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{49139}}^1$

素因数の和:49166

約数の個数: 16

約数和(自身を含む): 33022080

約数和(自身を除く): 11941449

約数列:

[1, 3, 11, 13, 33, 39, 143, 429, 49139, 147417, 540529, 638807, 1621587, 1916421, 7026877, 21080631]

約数ペア:

[(1, 21080631), (3, 7026877), (11, 1916421), (13, 1621587), (33, 638807), (39, 540529), (143, 147417), (429, 49139)]