20931445

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{79}}^1\times {\mathrm{2789}}^1$

素因数の和:2892

約数の個数: 16

約数和(自身を含む): 26784000

約数和(自身を除く): 5852555

約数列:

[1, 5, 19, 79, 95, 395, 1501, 2789, 7505, 13945, 52991, 220331, 264955, 1101655, 4186289, 20931445]

約数ペア:

[(1, 20931445), (5, 4186289), (19, 1101655), (79, 264955), (95, 220331), (395, 52991), (1501, 13945), (2789, 7505)]