20512915

素因数分解:

$5^1\times {\mathrm{41}}^1\times {\mathrm{47}}^1\times {\mathrm{2129}}^1$

素因数の和:2222

約数の個数: 16

約数和(自身を含む): 25764480

約数和(自身を除く): 5251565

約数列:

[1, 5, 41, 47, 205, 235, 1927, 2129, 9635, 10645, 87289, 100063, 436445, 500315, 4102583, 20512915]

約数ペア:

[(1, 20512915), (5, 4102583), (41, 500315), (47, 436445), (205, 100063), (235, 87289), (1927, 10645), (2129, 9635)]