81296125

素因数分解:

$5^3\times {\mathrm{17}}^1\times {\mathrm{67}}^1\times {\mathrm{571}}^1$

素因数の和:670

約数の個数: 32

約数和(自身を含む): 109219968

約数和(自身を除く): 27923843

約数列:

[1, 5, 17, 25, 67, 85, 125, 335, 425, 571, 1139, 1675, 2125, 2855, 5695, 8375, 9707, 14275, 28475, 38257, 48535, 71375, 142375, 191285, 242675, 650369, 956425, 1213375, 3251845, 4782125, 16259225, 81296125]

約数ペア:

[(1, 81296125), (5, 16259225), (17, 4782125), (25, 3251845), (67, 1213375), (85, 956425), (125, 650369), (335, 242675), (425, 191285), (571, 142375), (1139, 71375), (1675, 48535), (2125, 38257), (2855, 28475), (5695, 14275), (8375, 9707)]