17988080

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{20441}}^1$

素因数の和:20465

約数の個数: 40

約数和(自身を含む): 45626544

約数和(自身を除く): 27638464

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 176, 220, 440, 880, 20441, 40882, 81764, 102205, 163528, 204410, 224851, 327056, 408820, 449702, 817640, 899404, 1124255, 1635280, 1798808, 2248510, 3597616, 4497020, 8994040, 17988080]

約数ペア:

[(1, 17988080), (2, 8994040), (4, 4497020), (5, 3597616), (8, 2248510), (10, 1798808), (11, 1635280), (16, 1124255), (20, 899404), (22, 817640), (40, 449702), (44, 408820), (55, 327056), (80, 224851), (88, 204410), (110, 163528), (176, 102205), (220, 81764), (440, 40882), (880, 20441)]