640147053

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{137933}}^1$

素因数の和:137973

約数の個数: 32

約数和(自身を含む): 1112299776

約数和(自身を除く): 472152723

約数列:

[1, 3, 7, 13, 17, 21, 39, 51, 91, 119, 221, 273, 357, 663, 1547, 4641, 137933, 413799, 965531, 1793129, 2344861, 2896593, 5379387, 7034583, 12551903, 16414027, 30483193, 37655709, 49242081, 91449579, 213382351, 640147053]

約数ペア:

[(1, 640147053), (3, 213382351), (7, 91449579), (13, 49242081), (17, 37655709), (21, 30483193), (39, 16414027), (51, 12551903), (91, 7034583), (119, 5379387), (221, 2896593), (273, 2344861), (357, 1793129), (663, 965531), (1547, 413799), (4641, 137933)]