21209080

素因数分解:

$2^3\times 5^1\times {\mathrm{530227}}^1$

素因数の和:530238

約数の個数: 16

約数和(自身を含む): 47720520

約数和(自身を除く): 26511440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 530227, 1060454, 2120908, 2651135, 4241816, 5302270, 10604540, 21209080]

約数ペア:

[(1, 21209080), (2, 10604540), (4, 5302270), (5, 4241816), (8, 2651135), (10, 2120908), (20, 1060454), (40, 530227)]