278716415

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{199}}^1\times {\mathrm{641}}^1$

素因数の和:887

約数の個数: 32

約数和(自身を含む): 369792000

約数和(自身を除く): 91075585

約数列:

[1, 5, 19, 23, 95, 115, 199, 437, 641, 995, 2185, 3205, 3781, 4577, 12179, 14743, 18905, 22885, 60895, 73715, 86963, 127559, 280117, 434815, 637795, 1400585, 2423621, 2933857, 12118105, 14669285, 55743283, 278716415]

約数ペア:

[(1, 278716415), (5, 55743283), (19, 14669285), (23, 12118105), (95, 2933857), (115, 2423621), (199, 1400585), (437, 637795), (641, 434815), (995, 280117), (2185, 127559), (3205, 86963), (3781, 73715), (4577, 60895), (12179, 22885), (14743, 18905)]