21257104

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{120779}}^1$

素因数の和:120798

約数の個数: 20

約数和(自身を含む): 44930160

約数和(自身を除く): 23673056

約数列:

[1, 2, 4, 8, 11, 16, 22, 44, 88, 176, 120779, 241558, 483116, 966232, 1328569, 1932464, 2657138, 5314276, 10628552, 21257104]

約数ペア:

[(1, 21257104), (2, 10628552), (4, 5314276), (8, 2657138), (11, 1932464), (16, 1328569), (22, 966232), (44, 483116), (88, 241558), (176, 120779)]