20544755

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{73}}^1$

素因数の和:156

約数の個数: 64

約数和(自身を含む): 33758208

約数和(自身を除く): 13213453

約数列:

[1, 5, 7, 11, 17, 35, 43, 55, 73, 77, 85, 119, 187, 215, 301, 365, 385, 473, 511, 595, 731, 803, 935, 1241, 1309, 1505, 2365, 2555, 3139, 3311, 3655, 4015, 5117, 5621, 6205, 6545, 8041, 8687, 13651, 15695, 16555, 21973, 25585, 28105, 34529, 40205, 43435, 53363, 56287, 68255, 95557, 109865, 172645, 241703, 266815, 281435, 373541, 477785, 586993, 1208515, 1867705, 2934965, 4108951, 20544755]

約数ペア:

[(1, 20544755), (5, 4108951), (7, 2934965), (11, 1867705), (17, 1208515), (35, 586993), (43, 477785), (55, 373541), (73, 281435), (77, 266815), (85, 241703), (119, 172645), (187, 109865), (215, 95557), (301, 68255), (365, 56287), (385, 53363), (473, 43435), (511, 40205), (595, 34529), (731, 28105), (803, 25585), (935, 21973), (1241, 16555), (1309, 15695), (1505, 13651), (2365, 8687), (2555, 8041), (3139, 6545), (3311, 6205), (3655, 5621), (4015, 5117)]