28257980

素因数分解:

$2^2\times 5^1\times {\mathrm{677}}^1\times {\mathrm{2087}}^1$

素因数の和:2773

約数の個数: 24

約数和(自身を含む): 59457888

約数和(自身を除く): 31199908

約数列:

[1, 2, 4, 5, 10, 20, 677, 1354, 2087, 2708, 3385, 4174, 6770, 8348, 10435, 13540, 20870, 41740, 1412899, 2825798, 5651596, 7064495, 14128990, 28257980]

約数ペア:

[(1, 28257980), (2, 14128990), (4, 7064495), (5, 5651596), (10, 2825798), (20, 1412899), (677, 41740), (1354, 20870), (2087, 13540), (2708, 10435), (3385, 8348), (4174, 6770)]