81901719

素因数分解:

$3^3\times {\mathrm{139}}^2\times {\mathrm{157}}^1$

素因数の和:444

約数の個数: 24

約数和(自身を含む): 122993520

約数和(自身を除く): 41091801

約数列:

[1, 3, 9, 27, 139, 157, 417, 471, 1251, 1413, 3753, 4239, 19321, 21823, 57963, 65469, 173889, 196407, 521667, 589221, 3033397, 9100191, 27300573, 81901719]

約数ペア:

[(1, 81901719), (3, 27300573), (9, 9100191), (27, 3033397), (139, 589221), (157, 521667), (417, 196407), (471, 173889), (1251, 65469), (1413, 57963), (3753, 21823), (4239, 19321)]