28120005

素因数分解:

$3^2\times 5^1\times {\mathrm{179}}^1\times {\mathrm{3491}}^1$

素因数の和:3681

約数の個数: 24

約数和(自身を含む): 49027680

約数和(自身を除く): 20907675

約数列:

[1, 3, 5, 9, 15, 45, 179, 537, 895, 1611, 2685, 3491, 8055, 10473, 17455, 31419, 52365, 157095, 624889, 1874667, 3124445, 5624001, 9373335, 28120005]

約数ペア:

[(1, 28120005), (3, 9373335), (5, 5624001), (9, 3124445), (15, 1874667), (45, 624889), (179, 157095), (537, 52365), (895, 31419), (1611, 17455), (2685, 10473), (3491, 8055)]