21624560

素因数分解:

$2^4\times 5^1\times {\mathrm{270307}}^1$

素因数の和:270320

約数の個数: 20

約数和(自身を含む): 50277288

約数和(自身を除く): 28652728

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 270307, 540614, 1081228, 1351535, 2162456, 2703070, 4324912, 5406140, 10812280, 21624560]

約数ペア:

[(1, 21624560), (2, 10812280), (4, 5406140), (5, 4324912), (8, 2703070), (10, 2162456), (16, 1351535), (20, 1081228), (40, 540614), (80, 270307)]