20951290

素因数分解:

$2^1\times 5^1\times {\mathrm{337}}^1\times {\mathrm{6217}}^1$

素因数の和:6561

約数の個数: 16

約数和(自身を含む): 37830312

約数和(自身を除く): 16879022

約数列:

[1, 2, 5, 10, 337, 674, 1685, 3370, 6217, 12434, 31085, 62170, 2095129, 4190258, 10475645, 20951290]

約数ペア:

[(1, 20951290), (2, 10475645), (5, 4190258), (10, 2095129), (337, 62170), (674, 31085), (1685, 12434), (3370, 6217)]