20561938995

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{163}}^1\times {\mathrm{389}}^1\times {\mathrm{1663}}^1$

素因数の和:2236

約数の個数: 64

約数和(自身を含む): 35760291840

約数和(自身を除く): 15198352845

約数列:

[1, 3, 5, 13, 15, 39, 65, 163, 195, 389, 489, 815, 1167, 1663, 1945, 2119, 2445, 4989, 5057, 5835, 6357, 8315, 10595, 15171, 21619, 24945, 25285, 31785, 63407, 64857, 75855, 108095, 190221, 271069, 317035, 324285, 646907, 813207, 824291, 951105, 1355345, 1940721, 2472873, 3234535, 3523897, 4066035, 4121455, 8409791, 9703605, 10571691, 12364365, 17619485, 25229373, 42048955, 52858455, 105445841, 126146865, 316337523, 527229205, 1370795933, 1581687615, 4112387799, 6853979665, 20561938995]

約数ペア:

[(1, 20561938995), (3, 6853979665), (5, 4112387799), (13, 1581687615), (15, 1370795933), (39, 527229205), (65, 316337523), (163, 126146865), (195, 105445841), (389, 52858455), (489, 42048955), (815, 25229373), (1167, 17619485), (1663, 12364365), (1945, 10571691), (2119, 9703605), (2445, 8409791), (4989, 4121455), (5057, 4066035), (5835, 3523897), (6357, 3234535), (8315, 2472873), (10595, 1940721), (15171, 1355345), (21619, 951105), (24945, 824291), (25285, 813207), (31785, 646907), (63407, 324285), (64857, 317035), (75855, 271069), (108095, 190221)]