78581565

素因数分解:

$3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{139}}^1\times {\mathrm{739}}^1$

素因数の和:906

約数の個数: 48

約数和(自身を含む): 145454400

約数和(自身を除く): 66872835

約数列:

[1, 3, 5, 9, 15, 17, 45, 51, 85, 139, 153, 255, 417, 695, 739, 765, 1251, 2085, 2217, 2363, 3695, 6255, 6651, 7089, 11085, 11815, 12563, 21267, 33255, 35445, 37689, 62815, 102721, 106335, 113067, 188445, 308163, 513605, 565335, 924489, 1540815, 1746257, 4622445, 5238771, 8731285, 15716313, 26193855, 78581565]

約数ペア:

[(1, 78581565), (3, 26193855), (5, 15716313), (9, 8731285), (15, 5238771), (17, 4622445), (45, 1746257), (51, 1540815), (85, 924489), (139, 565335), (153, 513605), (255, 308163), (417, 188445), (695, 113067), (739, 106335), (765, 102721), (1251, 62815), (2085, 37689), (2217, 35445), (2363, 33255), (3695, 21267), (6255, 12563), (6651, 11815), (7089, 11085)]