1978045180

素因数分解:

$2^2\times 5^1\times {\mathrm{98902259}}^1$

素因数の和:98902268

約数の個数: 12

約数和(自身を含む): 4153894920

約数和(自身を除く): 2175849740

約数列:

[1, 2, 4, 5, 10, 20, 98902259, 197804518, 395609036, 494511295, 989022590, 1978045180]

約数ペア:

[(1, 1978045180), (2, 989022590), (4, 494511295), (5, 395609036), (10, 197804518), (20, 98902259)]