21169640

素因数分解:

$2^3\times 5^1\times {\mathrm{529241}}^1$

素因数の和:529252

約数の個数: 16

約数和(自身を含む): 47631780

約数和(自身を除く): 26462140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 529241, 1058482, 2116964, 2646205, 4233928, 5292410, 10584820, 21169640]

約数ペア:

[(1, 21169640), (2, 10584820), (4, 5292410), (5, 4233928), (8, 2646205), (10, 2116964), (20, 1058482), (40, 529241)]