20761280

素因数分解:

$2^6\times 5^1\times {\mathrm{64879}}^1$

素因数の和:64896

約数の個数: 28

約数和(自身を含む): 49438560

約数和(自身を除く): 28677280

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 64879, 129758, 259516, 324395, 519032, 648790, 1038064, 1297580, 2076128, 2595160, 4152256, 5190320, 10380640, 20761280]

約数ペア:

[(1, 20761280), (2, 10380640), (4, 5190320), (5, 4152256), (8, 2595160), (10, 2076128), (16, 1297580), (20, 1038064), (32, 648790), (40, 519032), (64, 324395), (80, 259516), (160, 129758), (320, 64879)]