18512739

素因数分解:

$3^3\times 7^3\times {\mathrm{1999}}^1$

素因数の和:2029

約数の個数: 32

約数和(自身を含む): 32000000

約数和(自身を除く): 13487261

約数列:

[1, 3, 7, 9, 21, 27, 49, 63, 147, 189, 343, 441, 1029, 1323, 1999, 3087, 5997, 9261, 13993, 17991, 41979, 53973, 97951, 125937, 293853, 377811, 685657, 881559, 2056971, 2644677, 6170913, 18512739]

約数ペア:

[(1, 18512739), (3, 6170913), (7, 2644677), (9, 2056971), (21, 881559), (27, 685657), (49, 377811), (63, 293853), (147, 125937), (189, 97951), (343, 53973), (441, 41979), (1029, 17991), (1323, 13993), (1999, 9261), (3087, 5997)]