198665943

素因数分解:

$3^1\times 7^4\times {\mathrm{27581}}^1$

素因数の和:27612

約数の個数: 20

約数和(自身を含む): 309028728

約数和(自身を除く): 110362785

約数列:

[1, 3, 7, 21, 49, 147, 343, 1029, 2401, 7203, 27581, 82743, 193067, 579201, 1351469, 4054407, 9460283, 28380849, 66221981, 198665943]

約数ペア:

[(1, 198665943), (3, 66221981), (7, 28380849), (21, 9460283), (49, 4054407), (147, 1351469), (343, 579201), (1029, 193067), (2401, 82743), (7203, 27581)]