20894380

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{80363}}^1$

素因数の和:80385

約数の個数: 24

約数和(自身を含む): 47254032

約数和(自身を除く): 26359652

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 80363, 160726, 321452, 401815, 803630, 1044719, 1607260, 2089438, 4178876, 5223595, 10447190, 20894380]

約数ペア:

[(1, 20894380), (2, 10447190), (4, 5223595), (5, 4178876), (10, 2089438), (13, 1607260), (20, 1044719), (26, 803630), (52, 401815), (65, 321452), (130, 160726), (260, 80363)]