205257717

素因数分解:

$3^2\times 7^3\times {\mathrm{66491}}^1$

素因数の和:66518

約数の個数: 24

約数和(自身を含む): 345758400

約数和(自身を除く): 140500683

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 343, 441, 1029, 3087, 66491, 199473, 465437, 598419, 1396311, 3258059, 4188933, 9774177, 22806413, 29322531, 68419239, 205257717]

約数ペア:

[(1, 205257717), (3, 68419239), (7, 29322531), (9, 22806413), (21, 9774177), (49, 4188933), (63, 3258059), (147, 1396311), (343, 598419), (441, 465437), (1029, 199473), (3087, 66491)]