20886020

素因数分解:

$2^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{13219}}^1$

素因数の和:13307

約数の個数: 24

約数和(自身を含む): 44419200

約数和(自身を除く): 23533180

約数列:

[1, 2, 4, 5, 10, 20, 79, 158, 316, 395, 790, 1580, 13219, 26438, 52876, 66095, 132190, 264380, 1044301, 2088602, 4177204, 5221505, 10443010, 20886020]

約数ペア:

[(1, 20886020), (2, 10443010), (4, 5221505), (5, 4177204), (10, 2088602), (20, 1044301), (79, 264380), (158, 132190), (316, 66095), (395, 52876), (790, 26438), (1580, 13219)]