81531810

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{905909}}^1$

素因数の和:905922

約数の個数: 24

約数和(自身を含む): 211982940

約数和(自身を除く): 130451130

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 90, 905909, 1811818, 2717727, 4529545, 5435454, 8153181, 9059090, 13588635, 16306362, 27177270, 40765905, 81531810]

約数ペア:

[(1, 81531810), (2, 40765905), (3, 27177270), (5, 16306362), (6, 13588635), (9, 9059090), (10, 8153181), (15, 5435454), (18, 4529545), (30, 2717727), (45, 1811818), (90, 905909)]