20787995

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{127}}^1\times {\mathrm{1723}}^1$

素因数の和:1874

約数の個数: 16

約数和(自身を含む): 26480640

約数和(自身を除く): 5692645

約数列:

[1, 5, 19, 95, 127, 635, 1723, 2413, 8615, 12065, 32737, 163685, 218821, 1094105, 4157599, 20787995]

約数ペア:

[(1, 20787995), (5, 4157599), (19, 1094105), (95, 218821), (127, 163685), (635, 32737), (1723, 12065), (2413, 8615)]