19165905

素因数分解:

$3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{1249}}^1$

素因数の和:1302

約数の個数: 48

約数和(自身を含む): 37440000

約数和(自身を除く): 18274095

約数列:

[1, 3, 5, 9, 11, 15, 31, 33, 45, 55, 93, 99, 155, 165, 279, 341, 465, 495, 1023, 1249, 1395, 1705, 3069, 3747, 5115, 6245, 11241, 13739, 15345, 18735, 38719, 41217, 56205, 68695, 116157, 123651, 193595, 206085, 348471, 425909, 580785, 618255, 1277727, 1742355, 2129545, 3833181, 6388635, 19165905]

約数ペア:

[(1, 19165905), (3, 6388635), (5, 3833181), (9, 2129545), (11, 1742355), (15, 1277727), (31, 618255), (33, 580785), (45, 425909), (55, 348471), (93, 206085), (99, 193595), (155, 123651), (165, 116157), (279, 68695), (341, 56205), (465, 41217), (495, 38719), (1023, 18735), (1249, 15345), (1395, 13739), (1705, 11241), (3069, 6245), (3747, 5115)]