20913205

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{7591}}^1$

素因数の和:7644

約数の個数: 16

約数和(自身を含む): 27331200

約数和(自身を除く): 6417995

約数列:

[1, 5, 19, 29, 95, 145, 551, 2755, 7591, 37955, 144229, 220139, 721145, 1100695, 4182641, 20913205]

約数ペア:

[(1, 20913205), (5, 4182641), (19, 1100695), (29, 721145), (95, 220139), (145, 144229), (551, 37955), (2755, 7591)]