21266217

素因数分解:

$3^2\times 7^1\times {\mathrm{31}}^1\times {\mathrm{10889}}^1$

素因数の和:10933

約数の個数: 24

約数和(自身を含む): 36241920

約数和(自身を除く): 14975703

約数列:

[1, 3, 7, 9, 21, 31, 63, 93, 217, 279, 651, 1953, 10889, 32667, 76223, 98001, 228669, 337559, 686007, 1012677, 2362913, 3038031, 7088739, 21266217]

約数ペア:

[(1, 21266217), (3, 7088739), (7, 3038031), (9, 2362913), (21, 1012677), (31, 686007), (63, 337559), (93, 228669), (217, 98001), (279, 76223), (651, 32667), (1953, 10889)]