20710228

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{3539}}^1$

素因数の和:3580

約数の個数: 48

約数和(自身を含む): 47577600

約数和(自身を除く): 26867372

約数列:

[1, 2, 4, 7, 11, 14, 19, 22, 28, 38, 44, 76, 77, 133, 154, 209, 266, 308, 418, 532, 836, 1463, 2926, 3539, 5852, 7078, 14156, 24773, 38929, 49546, 67241, 77858, 99092, 134482, 155716, 268964, 272503, 470687, 545006, 739651, 941374, 1090012, 1479302, 1882748, 2958604, 5177557, 10355114, 20710228]

約数ペア:

[(1, 20710228), (2, 10355114), (4, 5177557), (7, 2958604), (11, 1882748), (14, 1479302), (19, 1090012), (22, 941374), (28, 739651), (38, 545006), (44, 470687), (76, 272503), (77, 268964), (133, 155716), (154, 134482), (209, 99092), (266, 77858), (308, 67241), (418, 49546), (532, 38929), (836, 24773), (1463, 14156), (2926, 7078), (3539, 5852)]