209330875

素因数分解:

$5^3\times {\mathrm{13}}^1\times {\mathrm{128819}}^1$

素因数の和:128847

約数の個数: 16

約数和(自身を含む): 281342880

約数和(自身を除く): 72012005

約数列:

[1, 5, 13, 25, 65, 125, 325, 1625, 128819, 644095, 1674647, 3220475, 8373235, 16102375, 41866175, 209330875]

約数ペア:

[(1, 209330875), (5, 41866175), (13, 16102375), (25, 8373235), (65, 3220475), (125, 1674647), (325, 644095), (1625, 128819)]