20785115

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{131}}^1\times {\mathrm{2441}}^1$

素因数の和:2590

約数の個数: 16

約数和(自身を含む): 27076896

約数和(自身を除く): 6291781

約数列:

[1, 5, 13, 65, 131, 655, 1703, 2441, 8515, 12205, 31733, 158665, 319771, 1598855, 4157023, 20785115]

約数ペア:

[(1, 20785115), (5, 4157023), (13, 1598855), (65, 319771), (131, 158665), (655, 31733), (1703, 12205), (2441, 8515)]