20904513

素因数分解:

$3^1\times 7^1\times {\mathrm{797}}^1\times {\mathrm{1249}}^1$

素因数の和:2056

約数の個数: 16

約数和(自身を含む): 31920000

約数和(自身を除く): 11015487

約数列:

[1, 3, 7, 21, 797, 1249, 2391, 3747, 5579, 8743, 16737, 26229, 995453, 2986359, 6968171, 20904513]

約数ペア:

[(1, 20904513), (3, 6968171), (7, 2986359), (21, 995453), (797, 26229), (1249, 16737), (2391, 8743), (3747, 5579)]