81366138

素因数分解:

$2^1\times 3^2\times 7^1\times {\mathrm{645763}}^1$

素因数の和:645778

約数の個数: 24

約数和(自身を含む): 201478368

約数和(自身を除く): 120112230

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 42, 63, 126, 645763, 1291526, 1937289, 3874578, 4520341, 5811867, 9040682, 11623734, 13561023, 27122046, 40683069, 81366138]

約数ペア:

[(1, 81366138), (2, 40683069), (3, 27122046), (6, 13561023), (7, 11623734), (9, 9040682), (14, 5811867), (18, 4520341), (21, 3874578), (42, 1937289), (63, 1291526), (126, 645763)]