18718263

素因数分解:

$3^3\times {\mathrm{37}}^1\times {\mathrm{41}}^1\times {\mathrm{457}}^1$

素因数の和:544

約数の個数: 32

約数和(自身を含む): 29238720

約数和(自身を除く): 10520457

約数列:

[1, 3, 9, 27, 37, 41, 111, 123, 333, 369, 457, 999, 1107, 1371, 1517, 4113, 4551, 12339, 13653, 16909, 18737, 40959, 50727, 56211, 152181, 168633, 456543, 505899, 693269, 2079807, 6239421, 18718263]

約数ペア:

[(1, 18718263), (3, 6239421), (9, 2079807), (27, 693269), (37, 505899), (41, 456543), (111, 168633), (123, 152181), (333, 56211), (369, 50727), (457, 40959), (999, 18737), (1107, 16909), (1371, 13653), (1517, 12339), (4113, 4551)]