81273717

素因数分解:

$3^2\times 7^1\times {\mathrm{139}}^1\times {\mathrm{9281}}^1$

素因数の和:9433

約数の個数: 24

約数和(自身を含む): 135145920

約数和(自身を除く): 53872203

約数列:

[1, 3, 7, 9, 21, 63, 139, 417, 973, 1251, 2919, 8757, 9281, 27843, 64967, 83529, 194901, 584703, 1290059, 3870177, 9030413, 11610531, 27091239, 81273717]

約数ペア:

[(1, 81273717), (3, 27091239), (7, 11610531), (9, 9030413), (21, 3870177), (63, 1290059), (139, 584703), (417, 194901), (973, 83529), (1251, 64967), (2919, 27843), (8757, 9281)]