18722655

素因数分解:

$3^2\times 5^1\times 7^3\times {\mathrm{1213}}^1$

素因数の和:1245

約数の個数: 48

約数和(自身を含む): 37876800

約数和(自身を除く): 19154145

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 49, 63, 105, 147, 245, 315, 343, 441, 735, 1029, 1213, 1715, 2205, 3087, 3639, 5145, 6065, 8491, 10917, 15435, 18195, 25473, 42455, 54585, 59437, 76419, 127365, 178311, 297185, 382095, 416059, 534933, 891555, 1248177, 2080295, 2674665, 3744531, 6240885, 18722655]

約数ペア:

[(1, 18722655), (3, 6240885), (5, 3744531), (7, 2674665), (9, 2080295), (15, 1248177), (21, 891555), (35, 534933), (45, 416059), (49, 382095), (63, 297185), (105, 178311), (147, 127365), (245, 76419), (315, 59437), (343, 54585), (441, 42455), (735, 25473), (1029, 18195), (1213, 15435), (1715, 10917), (2205, 8491), (3087, 6065), (3639, 5145)]