16855905

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^2\times {\mathrm{37}}^1\times {\mathrm{251}}^1$

素因数の和:318

約数の個数: 48

約数和(自身を含む): 30566592

約数和(自身を除く): 13710687

約数列:

[1, 3, 5, 11, 15, 33, 37, 55, 111, 121, 165, 185, 251, 363, 407, 555, 605, 753, 1221, 1255, 1815, 2035, 2761, 3765, 4477, 6105, 8283, 9287, 13431, 13805, 22385, 27861, 30371, 41415, 46435, 67155, 91113, 102157, 139305, 151855, 306471, 455565, 510785, 1123727, 1532355, 3371181, 5618635, 16855905]

約数ペア:

[(1, 16855905), (3, 5618635), (5, 3371181), (11, 1532355), (15, 1123727), (33, 510785), (37, 455565), (55, 306471), (111, 151855), (121, 139305), (165, 102157), (185, 91113), (251, 67155), (363, 46435), (407, 41415), (555, 30371), (605, 27861), (753, 22385), (1221, 13805), (1255, 13431), (1815, 9287), (2035, 8283), (2761, 6105), (3765, 4477)]