21921082096

素因数分解:

$2^4\times {\mathrm{641}}^1\times {\mathrm{2137391}}^1$

素因数の和:2138040

約数の個数: 20

約数和(自身を含む): 42538375584

約数和(自身を除く): 20617293488

約数列:

[1, 2, 4, 8, 16, 641, 1282, 2564, 5128, 10256, 2137391, 4274782, 8549564, 17099128, 34198256, 1370067631, 2740135262, 5480270524, 10960541048, 21921082096]

約数ペア:

[(1, 21921082096), (2, 10960541048), (4, 5480270524), (8, 2740135262), (16, 1370067631), (641, 34198256), (1282, 17099128), (2564, 8549564), (5128, 4274782), (10256, 2137391)]