19903580

素因数分解:

$2^2\times 5^1\times {\mathrm{431}}^1\times {\mathrm{2309}}^1$

素因数の和:2749

約数の個数: 24

約数和(自身を含む): 41912640

約数和(自身を除く): 22009060

約数列:

[1, 2, 4, 5, 10, 20, 431, 862, 1724, 2155, 2309, 4310, 4618, 8620, 9236, 11545, 23090, 46180, 995179, 1990358, 3980716, 4975895, 9951790, 19903580]

約数ペア:

[(1, 19903580), (2, 9951790), (4, 4975895), (5, 3980716), (10, 1990358), (20, 995179), (431, 46180), (862, 23090), (1724, 11545), (2155, 9236), (2309, 8620), (4310, 4618)]