278889315

素因数分解:

$3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{719}}^1\times {\mathrm{1361}}^1$

素因数の和:2107

約数の個数: 32

約数和(自身を含む): 470707200

約数和(自身を除く): 191817885

約数列:

[1, 3, 5, 15, 19, 57, 95, 285, 719, 1361, 2157, 3595, 4083, 6805, 10785, 13661, 20415, 25859, 40983, 68305, 77577, 129295, 204915, 387885, 978559, 2935677, 4892795, 14678385, 18592621, 55777863, 92963105, 278889315]

約数ペア:

[(1, 278889315), (3, 92963105), (5, 55777863), (15, 18592621), (19, 14678385), (57, 4892795), (95, 2935677), (285, 978559), (719, 387885), (1361, 204915), (2157, 129295), (3595, 77577), (4083, 68305), (6805, 40983), (10785, 25859), (13661, 20415)]