20557790

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{186889}}^1$

素因数の和:186907

約数の個数: 16

約数和(自身を含む): 40368240

約数和(自身を除く): 19810450

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 186889, 373778, 934445, 1868890, 2055779, 4111558, 10278895, 20557790]

約数ペア:

[(1, 20557790), (2, 10278895), (5, 4111558), (10, 2055779), (11, 1868890), (22, 934445), (55, 373778), (110, 186889)]