18920055

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{16381}}^1$

素因数の和:16407

約数の個数: 32

約数和(自身を含む): 37744128

約数和(自身を除く): 18824073

約数列:

[1, 3, 5, 7, 11, 15, 21, 33, 35, 55, 77, 105, 165, 231, 385, 1155, 16381, 49143, 81905, 114667, 180191, 245715, 344001, 540573, 573335, 900955, 1261337, 1720005, 2702865, 3784011, 6306685, 18920055]

約数ペア:

[(1, 18920055), (3, 6306685), (5, 3784011), (7, 2702865), (11, 1720005), (15, 1261337), (21, 900955), (33, 573335), (35, 540573), (55, 344001), (77, 245715), (105, 180191), (165, 114667), (231, 81905), (385, 49143), (1155, 16381)]