20187531

素因数分解:

$3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{157}}^2$

素因数の和:340

約数の個数: 36

約数和(自身を含む): 36118992

約数和(自身を除く): 15931461

約数列:

[1, 3, 7, 9, 13, 21, 39, 63, 91, 117, 157, 273, 471, 819, 1099, 1413, 2041, 3297, 6123, 9891, 14287, 18369, 24649, 42861, 73947, 128583, 172543, 221841, 320437, 517629, 961311, 1552887, 2243059, 2883933, 6729177, 20187531]

約数ペア:

[(1, 20187531), (3, 6729177), (7, 2883933), (9, 2243059), (13, 1552887), (21, 961311), (39, 517629), (63, 320437), (91, 221841), (117, 172543), (157, 128583), (273, 73947), (471, 42861), (819, 24649), (1099, 18369), (1413, 14287), (2041, 9891), (3297, 6123)]