20620817

素因数分解:

$7^3\times {\mathrm{79}}^1\times {\mathrm{761}}^1$

素因数の和:861

約数の個数: 16

約数和(自身を含む): 24384000

約数和(自身を除く): 3763183

約数列:

[1, 7, 49, 79, 343, 553, 761, 3871, 5327, 27097, 37289, 60119, 261023, 420833, 2945831, 20620817]

約数ペア:

[(1, 20620817), (7, 2945831), (49, 420833), (79, 261023), (343, 60119), (553, 37289), (761, 27097), (3871, 5327)]