20677797

素因数分解:

$3^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{449}}^1$

素因数の和:522

約数の個数: 48

約数和(自身を含む): 37065600

約数和(自身を除く): 16387803

約数列:

[1, 3, 7, 9, 17, 21, 43, 51, 63, 119, 129, 153, 301, 357, 387, 449, 731, 903, 1071, 1347, 2193, 2709, 3143, 4041, 5117, 6579, 7633, 9429, 15351, 19307, 22899, 28287, 46053, 53431, 57921, 68697, 135149, 160293, 173763, 328219, 405447, 480879, 984657, 1216341, 2297533, 2953971, 6892599, 20677797]

約数ペア:

[(1, 20677797), (3, 6892599), (7, 2953971), (9, 2297533), (17, 1216341), (21, 984657), (43, 480879), (51, 405447), (63, 328219), (119, 173763), (129, 160293), (153, 135149), (301, 68697), (357, 57921), (387, 53431), (449, 46053), (731, 28287), (903, 22899), (1071, 19307), (1347, 15351), (2193, 9429), (2709, 7633), (3143, 6579), (4041, 5117)]