19983140

素因数分解:

$2^2\times 5^1\times {\mathrm{821}}^1\times {\mathrm{1217}}^1$

素因数の和:2047

約数の個数: 24

約数和(自身を含む): 42050232

約数和(自身を除く): 22067092

約数列:

[1, 2, 4, 5, 10, 20, 821, 1217, 1642, 2434, 3284, 4105, 4868, 6085, 8210, 12170, 16420, 24340, 999157, 1998314, 3996628, 4995785, 9991570, 19983140]

約数ペア:

[(1, 19983140), (2, 9991570), (4, 4995785), (5, 3996628), (10, 1998314), (20, 999157), (821, 24340), (1217, 16420), (1642, 12170), (2434, 8210), (3284, 6085), (4105, 4868)]