20781921382

素因数分解:

$2^1\times {\mathrm{157}}^1\times {\mathrm{1451}}^1\times {\mathrm{45613}}^1$

素因数の和:47223

約数の個数: 16

約数和(自身を含む): 31393744272

約数和(自身を除く): 10611822890

約数列:

[1, 2, 157, 314, 1451, 2902, 45613, 91226, 227807, 455614, 7161241, 14322482, 66184463, 132368926, 10390960691, 20781921382]

約数ペア:

[(1, 20781921382), (2, 10390960691), (157, 132368926), (314, 66184463), (1451, 14322482), (2902, 7161241), (45613, 455614), (91226, 227807)]