19925840

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{22643}}^1$

素因数の和:22667

約数の個数: 40

約数和(自身を含む): 50541408

約数和(自身を除く): 30615568

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 176, 220, 440, 880, 22643, 45286, 90572, 113215, 181144, 226430, 249073, 362288, 452860, 498146, 905720, 996292, 1245365, 1811440, 1992584, 2490730, 3985168, 4981460, 9962920, 19925840]

約数ペア:

[(1, 19925840), (2, 9962920), (4, 4981460), (5, 3985168), (8, 2490730), (10, 1992584), (11, 1811440), (16, 1245365), (20, 996292), (22, 905720), (40, 498146), (44, 452860), (55, 362288), (80, 249073), (88, 226430), (110, 181144), (176, 113215), (220, 90572), (440, 45286), (880, 22643)]