18662319

素因数分解:

$3^4\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{479}}^1$

素因数の和:541

約数の個数: 40

約数和(自身を含む): 30898560

約数和(自身を除く): 12236241

約数列:

[1, 3, 9, 13, 27, 37, 39, 81, 111, 117, 333, 351, 479, 481, 999, 1053, 1437, 1443, 2997, 4311, 4329, 6227, 12933, 12987, 17723, 18681, 38799, 38961, 53169, 56043, 159507, 168129, 230399, 478521, 504387, 691197, 1435563, 2073591, 6220773, 18662319]

約数ペア:

[(1, 18662319), (3, 6220773), (9, 2073591), (13, 1435563), (27, 691197), (37, 504387), (39, 478521), (81, 230399), (111, 168129), (117, 159507), (333, 56043), (351, 53169), (479, 38961), (481, 38799), (999, 18681), (1053, 17723), (1437, 12987), (1443, 12933), (2997, 6227), (4311, 4329)]