21360507

素因数分解:

$3^1\times 7^1\times {\mathrm{37}}^2\times {\mathrm{743}}^1$

素因数の和:827

約数の個数: 24

約数和(自身を含む): 33497856

約数和(自身を除く): 12137349

約数列:

[1, 3, 7, 21, 37, 111, 259, 743, 777, 1369, 2229, 4107, 5201, 9583, 15603, 27491, 28749, 82473, 192437, 577311, 1017167, 3051501, 7120169, 21360507]

約数ペア:

[(1, 21360507), (3, 7120169), (7, 3051501), (21, 1017167), (37, 577311), (111, 192437), (259, 82473), (743, 28749), (777, 27491), (1369, 15603), (2229, 9583), (4107, 5201)]