20780696

素因数分解:

$2^3\times {\mathrm{43}}^1\times {\mathrm{193}}^1\times {\mathrm{313}}^1$

素因数の和:555

約数の個数: 32

約数和(自身を含む): 40204560

約数和(自身を除く): 19423864

約数列:

[1, 2, 4, 8, 43, 86, 172, 193, 313, 344, 386, 626, 772, 1252, 1544, 2504, 8299, 13459, 16598, 26918, 33196, 53836, 60409, 66392, 107672, 120818, 241636, 483272, 2597587, 5195174, 10390348, 20780696]

約数ペア:

[(1, 20780696), (2, 10390348), (4, 5195174), (8, 2597587), (43, 483272), (86, 241636), (172, 120818), (193, 107672), (313, 66392), (344, 60409), (386, 53836), (626, 33196), (772, 26918), (1252, 16598), (1544, 13459), (2504, 8299)]