18639423

素因数分解:

$3^3\times {\mathrm{11}}^1\times {\mathrm{97}}^1\times {\mathrm{647}}^1$

素因数の和:764

約数の個数: 32

約数和(自身を含む): 30481920

約数和(自身を除く): 11842497

約数列:

[1, 3, 9, 11, 27, 33, 97, 99, 291, 297, 647, 873, 1067, 1941, 2619, 3201, 5823, 7117, 9603, 17469, 21351, 28809, 62759, 64053, 188277, 192159, 564831, 690349, 1694493, 2071047, 6213141, 18639423]

約数ペア:

[(1, 18639423), (3, 6213141), (9, 2071047), (11, 1694493), (27, 690349), (33, 564831), (97, 192159), (99, 188277), (291, 64053), (297, 62759), (647, 28809), (873, 21351), (1067, 17469), (1941, 9603), (2619, 7117), (3201, 5823)]