18505509

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{61}}^1\times {\mathrm{317}}^1$

素因数の和:421

約数の個数: 32

約数和(自身を含む): 28391040

約数和(自身を除く): 9885531

約数列:

[1, 3, 11, 29, 33, 61, 87, 183, 317, 319, 671, 951, 957, 1769, 2013, 3487, 5307, 9193, 10461, 19337, 19459, 27579, 58011, 58377, 101123, 212707, 303369, 560773, 638121, 1682319, 6168503, 18505509]

約数ペア:

[(1, 18505509), (3, 6168503), (11, 1682319), (29, 638121), (33, 560773), (61, 303369), (87, 212707), (183, 101123), (317, 58377), (319, 58011), (671, 27579), (951, 19459), (957, 19337), (1769, 10461), (2013, 9193), (3487, 5307)]