28920785

素因数分解:

$5^1\times {\mathrm{41}}^1\times {\mathrm{71}}^1\times {\mathrm{1987}}^1$

素因数の和:2104

約数の個数: 16

約数和(自身を含む): 36070272

約数和(自身を除く): 7149487

約数列:

[1, 5, 41, 71, 205, 355, 1987, 2911, 9935, 14555, 81467, 141077, 407335, 705385, 5784157, 28920785]

約数ペア:

[(1, 28920785), (5, 5784157), (41, 705385), (71, 407335), (205, 141077), (355, 81467), (1987, 14555), (2911, 9935)]