40320868

素因数分解:

$2^2\times 7^1\times {\mathrm{67}}^1\times {\mathrm{21493}}^1$

素因数の和:21571

約数の個数: 24

約数和(自身を含む): 81849152

約数和(自身を除く): 41528284

約数列:

[1, 2, 4, 7, 14, 28, 67, 134, 268, 469, 938, 1876, 21493, 42986, 85972, 150451, 300902, 601804, 1440031, 2880062, 5760124, 10080217, 20160434, 40320868]

約数ペア:

[(1, 40320868), (2, 20160434), (4, 10080217), (7, 5760124), (14, 2880062), (28, 1440031), (67, 601804), (134, 300902), (268, 150451), (469, 85972), (938, 42986), (1876, 21493)]