20782168

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{139}}^1\times {\mathrm{1699}}^1$

素因数の和:1855

約数の個数: 32

約数和(自身を含む): 42840000

約数和(自身を除く): 22057832

約数列:

[1, 2, 4, 8, 11, 22, 44, 88, 139, 278, 556, 1112, 1529, 1699, 3058, 3398, 6116, 6796, 12232, 13592, 18689, 37378, 74756, 149512, 236161, 472322, 944644, 1889288, 2597771, 5195542, 10391084, 20782168]

約数ペア:

[(1, 20782168), (2, 10391084), (4, 5195542), (8, 2597771), (11, 1889288), (22, 944644), (44, 472322), (88, 236161), (139, 149512), (278, 74756), (556, 37378), (1112, 18689), (1529, 13592), (1699, 12232), (3058, 6796), (3398, 6116)]