28386875

素因数分解:

$5^4\times {\mathrm{11}}^1\times {\mathrm{4129}}^1$

素因数の和:4160

約数の個数: 20

約数和(自身を含む): 38706360

約数和(自身を除く): 10319485

約数列:

[1, 5, 11, 25, 55, 125, 275, 625, 1375, 4129, 6875, 20645, 45419, 103225, 227095, 516125, 1135475, 2580625, 5677375, 28386875]

約数ペア:

[(1, 28386875), (5, 5677375), (11, 2580625), (25, 1135475), (55, 516125), (125, 227095), (275, 103225), (625, 45419), (1375, 20645), (4129, 6875)]