21945483

素因数分解:

$3^2\times 7^3\times {\mathrm{7109}}^1$

素因数の和:7136

約数の個数: 24

約数和(自身を含む): 36972000

約数和(自身を除く): 15026517

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 343, 441, 1029, 3087, 7109, 21327, 49763, 63981, 149289, 348341, 447867, 1045023, 2438387, 3135069, 7315161, 21945483]

約数ペア:

[(1, 21945483), (3, 7315161), (7, 3135069), (9, 2438387), (21, 1045023), (49, 447867), (63, 348341), (147, 149289), (343, 63981), (441, 49763), (1029, 21327), (3087, 7109)]