21447405

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{68087}}^1$

素因数の和:68105

約数の個数: 24

約数和(自身を含む): 42486912

約数和(自身を除く): 21039507

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 63, 105, 315, 68087, 204261, 340435, 476609, 612783, 1021305, 1429827, 2383045, 3063915, 4289481, 7149135, 21447405]

約数ペア:

[(1, 21447405), (3, 7149135), (5, 4289481), (7, 3063915), (9, 2383045), (15, 1429827), (21, 1021305), (35, 612783), (45, 476609), (63, 340435), (105, 204261), (315, 68087)]