21908080

素因数分解:

$2^4\times 5^1\times {\mathrm{53}}^1\times {\mathrm{5167}}^1$

素因数の和:5233

約数の個数: 40

約数和(自身を含む): 51907392

約数和(自身を除く): 29999312

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 53, 80, 106, 212, 265, 424, 530, 848, 1060, 2120, 4240, 5167, 10334, 20668, 25835, 41336, 51670, 82672, 103340, 206680, 273851, 413360, 547702, 1095404, 1369255, 2190808, 2738510, 4381616, 5477020, 10954040, 21908080]

約数ペア:

[(1, 21908080), (2, 10954040), (4, 5477020), (5, 4381616), (8, 2738510), (10, 2190808), (16, 1369255), (20, 1095404), (40, 547702), (53, 413360), (80, 273851), (106, 206680), (212, 103340), (265, 82672), (424, 51670), (530, 41336), (848, 25835), (1060, 20668), (2120, 10334), (4240, 5167)]