20109845

素因数分解:

$5^1\times 7^2\times {\mathrm{79}}^1\times {\mathrm{1039}}^1$

素因数の和:1137

約数の個数: 24

約数和(自身を含む): 28454400

約数和(自身を除く): 8344555

約数列:

[1, 5, 7, 35, 49, 79, 245, 395, 553, 1039, 2765, 3871, 5195, 7273, 19355, 36365, 50911, 82081, 254555, 410405, 574567, 2872835, 4021969, 20109845]

約数ペア:

[(1, 20109845), (5, 4021969), (7, 2872835), (35, 574567), (49, 410405), (79, 254555), (245, 82081), (395, 50911), (553, 36365), (1039, 19355), (2765, 7273), (3871, 5195)]