28381875

素因数分解:

$3^1\times 5^4\times {\mathrm{15137}}^1$

素因数の和:15160

約数の個数: 20

約数和(自身を含む): 47291112

約数和(自身を除く): 18909237

約数列:

[1, 3, 5, 15, 25, 75, 125, 375, 625, 1875, 15137, 45411, 75685, 227055, 378425, 1135275, 1892125, 5676375, 9460625, 28381875]

約数ペア:

[(1, 28381875), (3, 9460625), (5, 5676375), (15, 1892125), (25, 1135275), (75, 378425), (125, 227055), (375, 75685), (625, 45411), (1875, 15137)]