81816255

素因数分解:

$3^2\times 5^1\times {\mathrm{271}}^1\times {\mathrm{6709}}^1$

素因数の和:6991

約数の個数: 24

約数和(自身を含む): 142359360

約数和(自身を除く): 60543105

約数列:

[1, 3, 5, 9, 15, 45, 271, 813, 1355, 2439, 4065, 6709, 12195, 20127, 33545, 60381, 100635, 301905, 1818139, 5454417, 9090695, 16363251, 27272085, 81816255]

約数ペア:

[(1, 81816255), (3, 27272085), (5, 16363251), (9, 9090695), (15, 5454417), (45, 1818139), (271, 301905), (813, 100635), (1355, 60381), (2439, 33545), (4065, 20127), (6709, 12195)]