890802170

素因数分解:

$2^1\times 5^1\times {\mathrm{4391}}^1\times {\mathrm{20287}}^1$

素因数の和:24685

約数の個数: 16

約数和(自身を含む): 1603888128

約数和(自身を除く): 713085958

約数列:

[1, 2, 5, 10, 4391, 8782, 20287, 21955, 40574, 43910, 101435, 202870, 89080217, 178160434, 445401085, 890802170]

約数ペア:

[(1, 890802170), (2, 445401085), (5, 178160434), (10, 89080217), (4391, 202870), (8782, 101435), (20287, 43910), (21955, 40574)]