28510280

素因数分解:

$2^3\times 5^1\times {\mathrm{101}}^1\times {\mathrm{7057}}^1$

素因数の和:7169

約数の個数: 32

約数和(自身を含む): 64792440

約数和(自身を除く): 36282160

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 101, 202, 404, 505, 808, 1010, 2020, 4040, 7057, 14114, 28228, 35285, 56456, 70570, 141140, 282280, 712757, 1425514, 2851028, 3563785, 5702056, 7127570, 14255140, 28510280]

約数ペア:

[(1, 28510280), (2, 14255140), (4, 7127570), (5, 5702056), (8, 3563785), (10, 2851028), (20, 1425514), (40, 712757), (101, 282280), (202, 141140), (404, 70570), (505, 56456), (808, 35285), (1010, 28228), (2020, 14114), (4040, 7057)]