25878321

素因数分解:

$3^2\times 7^3\times {\mathrm{83}}^1\times {\mathrm{101}}^1$

素因数の和:211

約数の個数: 48

約数和(自身を含む): 44553600

約数和(自身を除く): 18675279

約数列:

[1, 3, 7, 9, 21, 49, 63, 83, 101, 147, 249, 303, 343, 441, 581, 707, 747, 909, 1029, 1743, 2121, 3087, 4067, 4949, 5229, 6363, 8383, 12201, 14847, 25149, 28469, 34643, 36603, 44541, 58681, 75447, 85407, 103929, 176043, 256221, 311787, 410767, 528129, 1232301, 2875369, 3696903, 8626107, 25878321]

約数ペア:

[(1, 25878321), (3, 8626107), (7, 3696903), (9, 2875369), (21, 1232301), (49, 528129), (63, 410767), (83, 311787), (101, 256221), (147, 176043), (249, 103929), (303, 85407), (343, 75447), (441, 58681), (581, 44541), (707, 36603), (747, 34643), (909, 28469), (1029, 25149), (1743, 14847), (2121, 12201), (3087, 8383), (4067, 6363), (4949, 5229)]