19809988

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{450227}}^1$

素因数の和:450242

約数の個数: 12

約数和(自身を含む): 37819152

約数和(自身を除く): 18009164

約数列:

[1, 2, 4, 11, 22, 44, 450227, 900454, 1800908, 4952497, 9904994, 19809988]

約数ペア:

[(1, 19809988), (2, 9904994), (4, 4952497), (11, 1800908), (22, 900454), (44, 450227)]