20900803

素因数分解:

$7^2\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{2281}}^1$

素因数の和:2323

約数の個数: 24

約数和(自身を含む): 28095984

約数和(自身を除く): 7195181

約数列:

[1, 7, 11, 17, 49, 77, 119, 187, 539, 833, 1309, 2281, 9163, 15967, 25091, 38777, 111769, 175637, 271439, 426547, 1229459, 1900073, 2985829, 20900803]

約数ペア:

[(1, 20900803), (7, 2985829), (11, 1900073), (17, 1229459), (49, 426547), (77, 271439), (119, 175637), (187, 111769), (539, 38777), (833, 25091), (1309, 15967), (2281, 9163)]