20358765

素因数分解:

$3^2\times 5^1\times 7^3\times {\mathrm{1319}}^1$

素因数の和:1351

約数の個数: 48

約数和(自身を含む): 41184000

約数和(自身を除く): 20825235

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 49, 63, 105, 147, 245, 315, 343, 441, 735, 1029, 1319, 1715, 2205, 3087, 3957, 5145, 6595, 9233, 11871, 15435, 19785, 27699, 46165, 59355, 64631, 83097, 138495, 193893, 323155, 415485, 452417, 581679, 969465, 1357251, 2262085, 2908395, 4071753, 6786255, 20358765]

約数ペア:

[(1, 20358765), (3, 6786255), (5, 4071753), (7, 2908395), (9, 2262085), (15, 1357251), (21, 969465), (35, 581679), (45, 452417), (49, 415485), (63, 323155), (105, 193893), (147, 138495), (245, 83097), (315, 64631), (343, 59355), (441, 46165), (735, 27699), (1029, 19785), (1319, 15435), (1715, 11871), (2205, 9233), (3087, 6595), (3957, 5145)]