20904079

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{157}}^1\times {\mathrm{827}}^1$

素因数の和:1014

約数の個数: 16

約数和(自身を含む): 25118208

約数和(自身を除く): 4214129

約数列:

[1, 7, 23, 157, 161, 827, 1099, 3611, 5789, 19021, 25277, 129839, 133147, 908873, 2986297, 20904079]

約数ペア:

[(1, 20904079), (7, 2986297), (23, 908873), (157, 133147), (161, 129839), (827, 25277), (1099, 19021), (3611, 5789)]