20123870

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{154799}}^1$

素因数の和:154819

約数の個数: 16

約数和(自身を含む): 39009600

約数和(自身を除く): 18885730

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 154799, 309598, 773995, 1547990, 2012387, 4024774, 10061935, 20123870]

約数ペア:

[(1, 20123870), (2, 10061935), (5, 4024774), (10, 2012387), (13, 1547990), (26, 773995), (65, 309598), (130, 154799)]