81515.000000

素因数分解:

$2^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{2521}}^1$

素因数の和:2545

約数の個数: 24

約数和(自身を含む): 1977248

約数和(自身を除く): 1059604

約数列:

[1, 2, 4, 7, 13, 14, 26, 28, 52, 91, 182, 364, 2521, 5042, 10084, 17647, 32773, 35294, 65546, 70588, 131092, 229411, 458822, 917644]

約数ペア:

[(1, 917644), (2, 458822), (4, 229411), (7, 131092), (13, 70588), (14, 65546), (26, 35294), (28, 32773), (52, 17647), (91, 10084), (182, 5042), (364, 2521)]