18910375

素因数分解:

$5^3\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{809}}^1$

素因数の和:852

約数の個数: 32

約数和(自身を含む): 27293760

約数和(自身を除く): 8383385

約数列:

[1, 5, 11, 17, 25, 55, 85, 125, 187, 275, 425, 809, 935, 1375, 2125, 4045, 4675, 8899, 13753, 20225, 23375, 44495, 68765, 101125, 151283, 222475, 343825, 756415, 1112375, 1719125, 3782075, 18910375]

約数ペア:

[(1, 18910375), (5, 3782075), (11, 1719125), (17, 1112375), (25, 756415), (55, 343825), (85, 222475), (125, 151283), (187, 101125), (275, 68765), (425, 44495), (809, 23375), (935, 20225), (1375, 13753), (2125, 8899), (4045, 4675)]