21964005

素因数分解:

$3^2\times 5^1\times 7^3\times {\mathrm{1423}}^1$

素因数の和:1455

約数の個数: 48

約数和(自身を含む): 44428800

約数和(自身を除く): 22464795

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 49, 63, 105, 147, 245, 315, 343, 441, 735, 1029, 1423, 1715, 2205, 3087, 4269, 5145, 7115, 9961, 12807, 15435, 21345, 29883, 49805, 64035, 69727, 89649, 149415, 209181, 348635, 448245, 488089, 627543, 1045905, 1464267, 2440445, 3137715, 4392801, 7321335, 21964005]

約数ペア:

[(1, 21964005), (3, 7321335), (5, 4392801), (7, 3137715), (9, 2440445), (15, 1464267), (21, 1045905), (35, 627543), (45, 488089), (49, 448245), (63, 348635), (105, 209181), (147, 149415), (245, 89649), (315, 69727), (343, 64035), (441, 49805), (735, 29883), (1029, 21345), (1423, 15435), (1715, 12807), (2205, 9961), (3087, 7115), (4269, 5145)]