1281303985

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{277639}}^1$

素因数の和:277728

約数の個数: 16

約数和(自身を含む): 1679166720

約数和(自身を除く): 397862735

約数列:

[1, 5, 13, 65, 71, 355, 923, 4615, 277639, 1388195, 3609307, 18046535, 19712369, 98561845, 256260797, 1281303985]

約数ペア:

[(1, 1281303985), (5, 256260797), (13, 98561845), (65, 19712369), (71, 18046535), (355, 3609307), (923, 1388195), (4615, 277639)]