1378082180

素因数分解:

$2^2\times 5^1\times {\mathrm{68904109}}^1$

素因数の和:68904118

約数の個数: 12

約数和(自身を含む): 2893972620

約数和(自身を除く): 1515890440

約数列:

[1, 2, 4, 5, 10, 20, 68904109, 137808218, 275616436, 344520545, 689041090, 1378082180]

約数ペア:

[(1, 1378082180), (2, 689041090), (4, 344520545), (5, 275616436), (10, 137808218), (20, 68904109)]