20972420

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{149803}}^1$

素因数の和:149819

約数の個数: 24

約数和(自身を含む): 50334144

約数和(自身を除く): 29361724

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 149803, 299606, 599212, 749015, 1048621, 1498030, 2097242, 2996060, 4194484, 5243105, 10486210, 20972420]

約数ペア:

[(1, 20972420), (2, 10486210), (4, 5243105), (5, 4194484), (7, 2996060), (10, 2097242), (14, 1498030), (20, 1048621), (28, 749015), (35, 599212), (70, 299606), (140, 149803)]