28678885

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{41}}^1\times {\mathrm{199}}^1$

素因数の和:301

約数の個数: 32

約数和(自身を含む): 38304000

約数和(自身を除く): 9625115

約数列:

[1, 5, 19, 37, 41, 95, 185, 199, 205, 703, 779, 995, 1517, 3515, 3781, 3895, 7363, 7585, 8159, 18905, 28823, 36815, 40795, 139897, 144115, 155021, 301883, 699485, 775105, 1509415, 5735777, 28678885]

約数ペア:

[(1, 28678885), (5, 5735777), (19, 1509415), (37, 775105), (41, 699485), (95, 301883), (185, 155021), (199, 144115), (205, 139897), (703, 40795), (779, 36815), (995, 28823), (1517, 18905), (3515, 8159), (3781, 7585), (3895, 7363)]