20931085

素因数分解:

$5^1\times 7^2\times {\mathrm{37}}^1\times {\mathrm{2309}}^1$

素因数の和:2365

約数の個数: 24

約数和(自身を含む): 30020760

約数和(自身を除く): 9089675

約数列:

[1, 5, 7, 35, 37, 49, 185, 245, 259, 1295, 1813, 2309, 9065, 11545, 16163, 80815, 85433, 113141, 427165, 565705, 598031, 2990155, 4186217, 20931085]

約数ペア:

[(1, 20931085), (5, 4186217), (7, 2990155), (35, 598031), (37, 565705), (49, 427165), (185, 113141), (245, 85433), (259, 80815), (1295, 16163), (1813, 11545), (2309, 9065)]