18915985

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{20231}}^1$

素因数の和:20264

約数の個数: 16

約数和(自身を含む): 26220672

約数和(自身を除く): 7304687

約数列:

[1, 5, 11, 17, 55, 85, 187, 935, 20231, 101155, 222541, 343927, 1112705, 1719635, 3783197, 18915985]

約数ペア:

[(1, 18915985), (5, 3783197), (11, 1719635), (17, 1112705), (55, 343927), (85, 222541), (187, 101155), (935, 20231)]