18138843

素因数分解:

$3^3\times {\mathrm{37}}^1\times {\mathrm{67}}^1\times {\mathrm{271}}^1$

素因数の和:384

約数の個数: 32

約数和(自身を含む): 28113920

約数和(自身を除く): 9975077

約数列:

[1, 3, 9, 27, 37, 67, 111, 201, 271, 333, 603, 813, 999, 1809, 2439, 2479, 7317, 7437, 10027, 18157, 22311, 30081, 54471, 66933, 90243, 163413, 270729, 490239, 671809, 2015427, 6046281, 18138843]

約数ペア:

[(1, 18138843), (3, 6046281), (9, 2015427), (27, 671809), (37, 490239), (67, 270729), (111, 163413), (201, 90243), (271, 66933), (333, 54471), (603, 30081), (813, 22311), (999, 18157), (1809, 10027), (2439, 7437), (2479, 7317)]