20107170040

素因数分解:

$2^3\times 5^1\times {\mathrm{641}}^1\times {\mathrm{784211}}^1$

素因数の和:784863

約数の個数: 32

約数和(自身を含む): 45311769360

約数和(自身を除く): 25204599320

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 641, 1282, 2564, 3205, 5128, 6410, 12820, 25640, 784211, 1568422, 3136844, 3921055, 6273688, 7842110, 15684220, 31368440, 502679251, 1005358502, 2010717004, 2513396255, 4021434008, 5026792510, 10053585020, 20107170040]

約数ペア:

[(1, 20107170040), (2, 10053585020), (4, 5026792510), (5, 4021434008), (8, 2513396255), (10, 2010717004), (20, 1005358502), (40, 502679251), (641, 31368440), (1282, 15684220), (2564, 7842110), (3205, 6273688), (5128, 3921055), (6410, 3136844), (12820, 1568422), (25640, 784211)]