20681408

素因数分解:

$2^6\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{1013}}^1$

素因数の和:1065

約数の個数: 56

約数和(自身を含む): 46360080

約数和(自身を除く): 25678672

約数列:

[1, 2, 4, 8, 11, 16, 22, 29, 32, 44, 58, 64, 88, 116, 176, 232, 319, 352, 464, 638, 704, 928, 1013, 1276, 1856, 2026, 2552, 4052, 5104, 8104, 10208, 11143, 16208, 20416, 22286, 29377, 32416, 44572, 58754, 64832, 89144, 117508, 178288, 235016, 323147, 356576, 470032, 646294, 713152, 940064, 1292588, 1880128, 2585176, 5170352, 10340704, 20681408]

約数ペア:

[(1, 20681408), (2, 10340704), (4, 5170352), (8, 2585176), (11, 1880128), (16, 1292588), (22, 940064), (29, 713152), (32, 646294), (44, 470032), (58, 356576), (64, 323147), (88, 235016), (116, 178288), (176, 117508), (232, 89144), (319, 64832), (352, 58754), (464, 44572), (638, 32416), (704, 29377), (928, 22286), (1013, 20416), (1276, 16208), (1856, 11143), (2026, 10208), (2552, 8104), (4052, 5104)]