81004820

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{311557}}^1$

素因数の和:311579

約数の個数: 24

約数和(自身を含む): 183196104

約数和(自身を除く): 102191284

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 311557, 623114, 1246228, 1557785, 3115570, 4050241, 6231140, 8100482, 16200964, 20251205, 40502410, 81004820]

約数ペア:

[(1, 81004820), (2, 40502410), (4, 20251205), (5, 16200964), (10, 8100482), (13, 6231140), (20, 4050241), (26, 3115570), (52, 1557785), (65, 1246228), (130, 623114), (260, 311557)]