19983400

素因数分解:

$2^3\times 5^2\times {\mathrm{41}}^1\times {\mathrm{2437}}^1$

素因数の和:2494

約数の個数: 48

約数和(自身を含む): 47614140

約数和(自身を除く): 27630740

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 41, 50, 82, 100, 164, 200, 205, 328, 410, 820, 1025, 1640, 2050, 2437, 4100, 4874, 8200, 9748, 12185, 19496, 24370, 48740, 60925, 97480, 99917, 121850, 199834, 243700, 399668, 487400, 499585, 799336, 999170, 1998340, 2497925, 3996680, 4995850, 9991700, 19983400]

約数ペア:

[(1, 19983400), (2, 9991700), (4, 4995850), (5, 3996680), (8, 2497925), (10, 1998340), (20, 999170), (25, 799336), (40, 499585), (41, 487400), (50, 399668), (82, 243700), (100, 199834), (164, 121850), (200, 99917), (205, 97480), (328, 60925), (410, 48740), (820, 24370), (1025, 19496), (1640, 12185), (2050, 9748), (2437, 8200), (4100, 4874)]