20100509

素因数分解:

${\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{37}}^1\times {\mathrm{131}}^1$

素因数の和:221

約数の個数: 32

約数和(自身を含む): 25280640

約数和(自身を除く): 5180131

約数列:

[1, 11, 13, 29, 37, 131, 143, 319, 377, 407, 481, 1073, 1441, 1703, 3799, 4147, 4847, 5291, 11803, 13949, 18733, 41789, 49387, 53317, 63011, 140563, 153439, 543257, 693121, 1546193, 1827319, 20100509]

約数ペア:

[(1, 20100509), (11, 1827319), (13, 1546193), (29, 693121), (37, 543257), (131, 153439), (143, 140563), (319, 63011), (377, 53317), (407, 49387), (481, 41789), (1073, 18733), (1441, 13949), (1703, 11803), (3799, 5291), (4147, 4847)]