19989865

素因数分解:

$5^1\times 7^1\times {\mathrm{439}}^1\times {\mathrm{1301}}^1$

素因数の和:1752

約数の個数: 16

約数和(自身を含む): 27498240

約数和(自身を除く): 7508375

約数列:

[1, 5, 7, 35, 439, 1301, 2195, 3073, 6505, 9107, 15365, 45535, 571139, 2855695, 3997973, 19989865]

約数ペア:

[(1, 19989865), (5, 3997973), (7, 2855695), (35, 571139), (439, 45535), (1301, 15365), (2195, 9107), (3073, 6505)]