20540254

素因数分解:

$2^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{2087}}^1$

素因数の和:2152

約数の個数: 32

約数和(自身を含む): 38085120

約数和(自身を除く): 17544866

約数列:

[1, 2, 7, 14, 19, 37, 38, 74, 133, 259, 266, 518, 703, 1406, 2087, 4174, 4921, 9842, 14609, 29218, 39653, 77219, 79306, 154438, 277571, 540533, 555142, 1081066, 1467161, 2934322, 10270127, 20540254]

約数ペア:

[(1, 20540254), (2, 10270127), (7, 2934322), (14, 1467161), (19, 1081066), (37, 555142), (38, 540533), (74, 277571), (133, 154438), (259, 79306), (266, 77219), (518, 39653), (703, 29218), (1406, 14609), (2087, 9842), (4174, 4921)]