20945139

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{181}}^1\times {\mathrm{2269}}^1$

素因数の和:2470

約数の個数: 16

約数和(自身を含む): 29746080

約数和(自身を除く): 8800941

約数列:

[1, 3, 17, 51, 181, 543, 2269, 3077, 6807, 9231, 38573, 115719, 410689, 1232067, 6981713, 20945139]

約数ペア:

[(1, 20945139), (3, 6981713), (17, 1232067), (51, 410689), (181, 115719), (543, 38573), (2269, 9231), (3077, 6807)]