81267255

素因数分解:

$3^2\times 5^1\times {\mathrm{257}}^1\times {\mathrm{7027}}^1$

素因数の和:7295

約数の個数: 24

約数和(自身を含む): 141431472

約数和(自身を除く): 60164217

約数列:

[1, 3, 5, 9, 15, 45, 257, 771, 1285, 2313, 3855, 7027, 11565, 21081, 35135, 63243, 105405, 316215, 1805939, 5417817, 9029695, 16253451, 27089085, 81267255]

約数ペア:

[(1, 81267255), (3, 27089085), (5, 16253451), (9, 9029695), (15, 5417817), (45, 1805939), (257, 316215), (771, 105405), (1285, 63243), (2313, 35135), (3855, 21081), (7027, 11565)]