19785726220

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{661}}^1\times {\mathrm{115127}}^1$

素因数の和:115810

約数の個数: 48

約数和(自身を含む): 44814264768

約数和(自身を除く): 25028538548

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 661, 1322, 2644, 3305, 6610, 8593, 13220, 17186, 34372, 42965, 85930, 115127, 171860, 230254, 460508, 575635, 1151270, 1496651, 2302540, 2993302, 5986604, 7483255, 14966510, 29933020, 76098947, 152197894, 304395788, 380494735, 760989470, 989286311, 1521978940, 1978572622, 3957145244, 4946431555, 9892863110, 19785726220]

約数ペア:

[(1, 19785726220), (2, 9892863110), (4, 4946431555), (5, 3957145244), (10, 1978572622), (13, 1521978940), (20, 989286311), (26, 760989470), (52, 380494735), (65, 304395788), (130, 152197894), (260, 76098947), (661, 29933020), (1322, 14966510), (2644, 7483255), (3305, 5986604), (6610, 2993302), (8593, 2302540), (13220, 1496651), (17186, 1151270), (34372, 575635), (42965, 460508), (85930, 230254), (115127, 171860)]