21444423

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{193}}^1$

素因数の和:264

約数の個数: 64

約数和(自身を含む): 39631872

約数和(自身を除く): 18187449

約数列:

[1, 3, 7, 11, 13, 21, 33, 37, 39, 77, 91, 111, 143, 193, 231, 259, 273, 407, 429, 481, 579, 777, 1001, 1221, 1351, 1443, 2123, 2509, 2849, 3003, 3367, 4053, 5291, 6369, 7141, 7527, 8547, 10101, 14861, 15873, 17563, 21423, 27599, 37037, 44583, 49987, 52689, 78551, 82797, 92833, 111111, 149961, 193193, 235653, 278499, 549857, 579579, 649831, 1021163, 1649571, 1949493, 3063489, 7148141, 21444423]

約数ペア:

[(1, 21444423), (3, 7148141), (7, 3063489), (11, 1949493), (13, 1649571), (21, 1021163), (33, 649831), (37, 579579), (39, 549857), (77, 278499), (91, 235653), (111, 193193), (143, 149961), (193, 111111), (231, 92833), (259, 82797), (273, 78551), (407, 52689), (429, 49987), (481, 44583), (579, 37037), (777, 27599), (1001, 21423), (1221, 17563), (1351, 15873), (1443, 14861), (2123, 10101), (2509, 8547), (2849, 7527), (3003, 7141), (3367, 6369), (4053, 5291)]