20964923

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{283}}^1\times {\mathrm{557}}^1$

素因数の和:866

約数の個数: 16

約数和(自身を含む): 25355520

約数和(自身を除く): 4390597

約数列:

[1, 7, 19, 133, 283, 557, 1981, 3899, 5377, 10583, 37639, 74081, 157631, 1103417, 2994989, 20964923]

約数ペア:

[(1, 20964923), (7, 2994989), (19, 1103417), (133, 157631), (283, 74081), (557, 37639), (1981, 10583), (3899, 5377)]